SOLR-13016: Computing suggestions when policy have "#EQUAL" or "#ALL" rules take...
authorNoble Paul <noble@apache.org>
Wed, 9 Jan 2019 12:18:05 +0000 (23:18 +1100)
committerNoble Paul <noble@apache.org>
Wed, 9 Jan 2019 12:18:05 +0000 (23:18 +1100)
18 files changed:
solr/CHANGES.txt
solr/solrj/src/java/org/apache/solr/client/solrj/cloud/autoscaling/Clause.java
solr/solrj/src/java/org/apache/solr/client/solrj/cloud/autoscaling/CoresVariable.java
solr/solrj/src/java/org/apache/solr/client/solrj/cloud/autoscaling/FreeDiskVariable.java
solr/solrj/src/java/org/apache/solr/client/solrj/cloud/autoscaling/MoveReplicaSuggester.java
solr/solrj/src/java/org/apache/solr/client/solrj/cloud/autoscaling/Policy.java
solr/solrj/src/java/org/apache/solr/client/solrj/cloud/autoscaling/PolicyHelper.java
solr/solrj/src/java/org/apache/solr/client/solrj/cloud/autoscaling/Preference.java
solr/solrj/src/java/org/apache/solr/client/solrj/cloud/autoscaling/ReplicaCount.java
solr/solrj/src/java/org/apache/solr/client/solrj/cloud/autoscaling/ReplicaVariable.java
solr/solrj/src/java/org/apache/solr/client/solrj/cloud/autoscaling/Row.java
solr/solrj/src/java/org/apache/solr/client/solrj/cloud/autoscaling/Suggester.java
solr/solrj/src/java/org/apache/solr/client/solrj/cloud/autoscaling/Suggestion.java
solr/solrj/src/java/org/apache/solr/client/solrj/impl/SolrClientNodeStateProvider.java
solr/solrj/src/java/org/apache/solr/common/util/Utils.java
solr/solrj/src/test-files/solrj/solr/autoscaling/testInfiniteLoop.json [new file with mode: 0644]
solr/solrj/src/test/org/apache/solr/client/solrj/cloud/autoscaling/TestPolicy.java
solr/solrj/src/test/org/apache/solr/client/solrj/cloud/autoscaling/TestPolicy2.java

index 04d71eb..7bd259f 100644 (file)
@@ -275,6 +275,8 @@ Improvements
 
 * SOLR-12983: JavabinLoader should avoid creating String Objects and create UTF8CharSequence fields from byte[] (noble)
 
+* SOLR-13016: Computing suggestions when policy have "#EQUAL" or "#ALL" rules take too long (noble)
+
 Other Changes
 ----------------------
 
index 4185312..d23cbec 100644 (file)
@@ -58,6 +58,7 @@ import static org.apache.solr.common.util.Utils.toJSONString;
 public class Clause implements MapWriter, Comparable<Clause> {
   private static final Set<String> IGNORE_TAGS = new HashSet<>(Arrays.asList(REPLICA, COLLECTION, SHARD, "strict", "type"));
 
+  private final int hashCode;
   final boolean hasComputedValue;
   final Map<String, Object> original;
   final Clause derivedFrom;
@@ -67,6 +68,7 @@ public class Clause implements MapWriter, Comparable<Clause> {
 
   protected Clause(Clause clause, Function<Condition, Object> computedValueEvaluator) {
     this.original = clause.original;
+    this.hashCode = original.hashCode();
     this.type = clause.type;
     this.collection = clause.collection;
     this.shard = clause.shard;
@@ -80,6 +82,7 @@ public class Clause implements MapWriter, Comparable<Clause> {
 
   // internal use only
   Clause(Map<String, Object> original, Condition tag, Condition globalTag, boolean isStrict)  {
+    this.hashCode = original.hashCode();
     this.original = original;
     this.tag = tag;
     this.globalTag = globalTag;
@@ -93,6 +96,7 @@ public class Clause implements MapWriter, Comparable<Clause> {
   private Clause(Map<String, Object> m) {
     derivedFrom = (Clause) m.remove(Clause.class.getName());
     this.original = Utils.getDeepCopy(m, 10);
+    this.hashCode = original.hashCode();
     String type = (String) m.get("type");
     this.type = type == null || ANY.equals(type) ? null : Replica.Type.valueOf(type.toUpperCase(Locale.ROOT));
     strict = Boolean.parseBoolean(String.valueOf(m.getOrDefault("strict", "true")));
@@ -449,12 +453,27 @@ public class Clause implements MapWriter, Comparable<Clause> {
 
   }
 
+  public static long addReplicaCountsForNode = 0;
+  public static long addReplicaCountsForNodeCacheMiss = 0;
+  public static final String PERSHARD_REPLICAS = Clause.class.getSimpleName() + ".perShardReplicas";
   private void addReplicaCountsForNode(ComputedValueEvaluator computedValueEvaluator, ReplicaCount replicaCount, Row node) {
-    node.forEachReplica((String) collection.getValue(), ri -> {
-      if (Policy.ANY.equals(computedValueEvaluator.shardName)
-          || computedValueEvaluator.shardName.equals(ri.getShard()))
-        replicaCount.increment(ri);
-    });
+    addReplicaCountsForNode++;
+
+    ReplicaCount rc = node.computeCacheIfAbsent(computedValueEvaluator.collName, computedValueEvaluator.shardName, PERSHARD_REPLICAS,
+        this, o -> {
+          addReplicaCountsForNodeCacheMiss++;
+          ReplicaCount result = new ReplicaCount();
+          node.forEachReplica((String) collection.getValue(), ri -> {
+            if (Policy.ANY.equals(computedValueEvaluator.shardName)
+                || computedValueEvaluator.shardName.equals(ri.getShard()))
+              result.increment(ri);
+          });
+          return result;
+        });
+    if (rc != null)
+      replicaCount.increment(rc);
+
+
   }
 
   List<Violation> testPerNode(Policy.Session session, double[] deviations) {
@@ -633,7 +652,7 @@ public class Clause implements MapWriter, Comparable<Clause> {
 
   @Override
   public int hashCode() {
-    return original.hashCode();
+    return hashCode;
   }
 
   public static Double parseDouble(String name, Object val) {
index f8717b1..a468385 100644 (file)
@@ -50,6 +50,7 @@ public class CoresVariable extends VariableBase {
     if (ctx.violation == null || ctx.violation.replicaCountDelta == 0) return;
     if (ctx.violation.replicaCountDelta > 0) {//there are more replicas than necessary
       for (int i = 0; i < Math.abs(ctx.violation.replicaCountDelta); i++) {
+        if (!ctx.needMore()) return;
         Suggester suggester = ctx.session.getSuggester(MOVEREPLICA)
             .hint(Suggester.Hint.SRC_NODE, ctx.violation.node);
         if (ctx.addSuggestion(suggester) == null) break;
@@ -83,14 +84,23 @@ public class CoresVariable extends VariableBase {
     }
   }
 
+  static final String TOTALCORES = CoresVariable.class.getSimpleName() + ".totalcores";
   private int getTotalCores(Policy.Session session, AtomicInteger liveNodes) {
-    int[] coresCount = new int[1];
+    int coresCount = 0;
     for (Row row : session.matrix) {
       if (!row.isLive) continue;
       liveNodes.incrementAndGet();
-      row.forEachReplica(replicaInfo -> coresCount[0]++);
+      Integer res = row.computeCacheIfAbsent(TOTALCORES, o -> {
+        int[] result = new int[1];
+        row.forEachReplica(replicaInfo -> result[0]++);
+        return result[0];
+      });
+      if (res != null)
+        coresCount += res;
+
+
     }
-    return coresCount[0];
+    return coresCount;
   }
 
   @Override
index 2c2ff18..2193ea3 100644 (file)
@@ -113,7 +113,7 @@ public class FreeDiskVariable extends VariableBase {
               .hint(Hint.COLL_SHARD, new Pair<>(replica.getCollection(), replica.getShard()))
               .hint(Hint.SRC_NODE, node.node)
               .forceOperation(true);
-          if (ctx.addSuggestion(suggester) == null) break;
+          ctx.addSuggestion(suggester);
           currentDelta -= Clause.parseLong(CORE_IDX.tagName, replica.getVariable(CORE_IDX.tagName));
         }
       }
index 40dacdd..d68f558 100644 (file)
@@ -64,7 +64,6 @@ public class MoveReplicaSuggester extends Suggester {
         targetRow = targetRow.addReplica(ri.getCollection(), ri.getShard(), ri.getType(), strict); // add replica to target first
         Row srcRowModified = targetRow.session.getNode(fromRow.node).removeReplica(ri.getCollection(), ri.getShard(), ri.getType());//then remove replica from source node
         List<Violation> errs = testChangedMatrix(strict, srcRowModified.session);
-        srcRowModified.session.applyRules(); // now resort the nodes with the new values
         Policy.Session tmpSession = srcRowModified.session;
 
         if (!containsNewErrors(errs) &&
index 1642ca6..6bc328b 100644 (file)
@@ -18,6 +18,7 @@
 package org.apache.solr.client.solrj.cloud.autoscaling;
 
 import java.io.IOException;
+import java.io.StringWriter;
 import java.lang.invoke.MethodHandles;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -277,6 +278,7 @@ public class Policy implements MapWriter {
   }
 
   static void setApproxValuesAndSortNodes(List<Preference> clusterPreferences, List<Row> matrix) {
+    List<Row> matrixCopy = new ArrayList<>(matrix);
     List<Row> deadNodes = null;
     Iterator<Row> it =matrix.iterator();
     while (it.hasNext()){
@@ -300,16 +302,19 @@ public class Policy implements MapWriter {
             return p.compare(r1, r2, false);
           });
         } catch (Exception e) {
-//          log.error("Exception! prefs = {}, recent r1 = {}, r2 = {}, matrix = {}",
-//              clusterPreferences,
-//              lastComparison[0],
-//              lastComparison[1],
-//              Utils.toJSONString(Utils.getDeepCopy(tmpMatrix, 6, false)));
-          log.error("Exception! prefs = {}, recent r1 = {}, r2 = {}, matrix = {}",
-              clusterPreferences,
-              lastComparison[0].node,
-              lastComparison[1].node,
-              matrix.size());
+          try {
+            Map m = Collections.singletonMap("diagnostics", (MapWriter) ew -> {
+              PolicyHelper.writeNodes(ew, matrixCopy);
+              ew.put("config", matrix.get(0).session.getPolicy());
+            });
+            log.error("Exception! prefs = {}, recent r1 = {}, r2 = {}, matrix = {}",
+                clusterPreferences,
+                lastComparison[0].node,
+                lastComparison[1].node,
+                Utils.writeJson(m, new StringWriter(), true).toString());
+          } catch (IOException e1) {
+            //
+          }
           throw new RuntimeException(e.getMessage());
         }
         p.setApproxVal(tmpMatrix);
@@ -602,7 +607,7 @@ public class Policy implements MapWriter {
      * Apply the preferences and conditions
      */
     void applyRules() {
-      setApproxValuesAndSortNodes(clusterPreferences, matrix);
+      sortNodes();
 
       for (Clause clause : expandedClauses) {
         List<Violation> errs = clause.test(this, null);
@@ -610,6 +615,10 @@ public class Policy implements MapWriter {
       }
     }
 
+    void sortNodes() {
+      setApproxValuesAndSortNodes(clusterPreferences, matrix);
+    }
+
 
     public List<Violation> getViolations() {
       return violations;
index a553f2c..5a9acb4 100644 (file)
@@ -203,12 +203,20 @@ public class PolicyHelper {
 
   public static MapWriter getDiagnostics(Policy.Session session) {
     List<Row> sorted = session.getSortedNodes();
+    return ew -> {
+      writeNodes(ew, sorted);
+      ew.put("liveNodes", session.cloudManager.getClusterStateProvider().getLiveNodes())
+          .put("violations", session.getViolations())
+          .put("config", session.getPolicy());
+    };
+  }
+
+  static void writeNodes(MapWriter.EntryWriter ew, List<Row> sorted) throws IOException {
     Set<CharSequence> alreadyWritten = new HashSet<>();
     BiPredicate<CharSequence, Object> p = dedupeKeyPredicate(alreadyWritten)
         .and(ConditionalMapWriter.NON_NULL_VAL)
         .and((s, o) -> !(o instanceof Map) || !((Map) o).isEmpty());
-
-    return ew -> ew.put("sortedNodes", (IteratorWriter) iw -> {
+    ew.put("sortedNodes", (IteratorWriter) iw -> {
       for (Row row : sorted) {
         iw.add((MapWriter) ew1 -> {
           alreadyWritten.clear();
@@ -219,20 +227,19 @@ public class PolicyHelper {
           ew1.put("replicas", row.collectionVsShardVsReplicas);
         });
       }
-    }).put("liveNodes", session.cloudManager.getClusterStateProvider().getLiveNodes())
-        .put("violations", session.getViolations())
-        .put("config", session.getPolicy());
+    });
   }
 
   public static List<Suggester.SuggestionInfo> getSuggestions(AutoScalingConfig autoScalingConf,
                                                               SolrCloudManager cloudManager) {
-    return getSuggestions(autoScalingConf, cloudManager, 50);
+    return getSuggestions(autoScalingConf, cloudManager, 20, 10);
   }
 
   public static List<Suggester.SuggestionInfo> getSuggestions(AutoScalingConfig autoScalingConf,
-                                                              SolrCloudManager cloudManager, int max) {
+                                                              SolrCloudManager cloudManager, int max, int timeoutInSecs) {
     Policy policy = autoScalingConf.getPolicy();
     Suggestion.Ctx ctx = new Suggestion.Ctx();
+    ctx.endTime = cloudManager.getTimeSource().getTimeNs() + TimeUnit.SECONDS.toNanos(timeoutInSecs);
     ctx.max = max;
     ctx.session = policy.createSession(cloudManager);
     List<Violation> violations = ctx.session.getViolations();
@@ -243,6 +250,7 @@ public class PolicyHelper {
 
     for (Violation current : ctx.session.getViolations()) {
       for (Violation old : violations) {
+        if (!ctx.needMore()) return ctx.getSuggestions();
         if (current.equals(old)) {
           //could not be resolved
           ctx.suggestions.add(new Suggester.SuggestionInfo(current, null, "unresolved-violation"));
@@ -267,6 +275,7 @@ public class PolicyHelper {
 
   private static void addMissingReplicas(SolrCloudManager cloudManager, Suggestion.Ctx ctx) throws IOException {
     cloudManager.getClusterStateProvider().getClusterState().forEachCollection(coll -> coll.forEach(slice -> {
+      if (!ctx.needMore()) return;
           ReplicaCount replicaCount = new ReplicaCount();
           slice.forEach(replica -> {
             if (replica.getState() == Replica.State.ACTIVE || replica.getState() == Replica.State.RECOVERING) {
@@ -283,6 +292,7 @@ public class PolicyHelper {
   private static void addMissingReplicas(ReplicaCount count, DocCollection coll, String shard, Replica.Type type, Suggestion.Ctx ctx) {
     int delta = count.delta(coll.getExpectedReplicaCount(type, 0), type);
     for (; ; ) {
+      if (!ctx.needMore()) return;
       if (delta >= 0) break;
       SolrRequest suggestion = ctx.addSuggestion(
           ctx.session.getSuggester(ADDREPLICA)
@@ -299,6 +309,7 @@ public class PolicyHelper {
     List<Row> matrix = ctx.session.matrix;
     if (matrix.isEmpty()) return;
     for (int i = 0; i < matrix.size(); i++) {
+      if (ctx.getSuggestions().size() >= maxTotalSuggestions || ctx.hasTimedOut()) break;
       Row row = matrix.get(i);
       Map<String, Collection<String>> collVsShards = new HashMap<>();
       row.forEachReplica(ri -> collVsShards.computeIfAbsent(ri.getCollection(), s -> new HashSet<>()).add(ri.getShard()));
@@ -306,7 +317,8 @@ public class PolicyHelper {
         e.setValue(FreeDiskVariable.getSortedShards(Collections.singletonList(row), e.getValue(), e.getKey()));
       }
       for (Map.Entry<String, Collection<String>> e : collVsShards.entrySet()) {
-        if (ctx.getSuggestions().size() >= maxTotalSuggestions) break;
+        if (!ctx.needMore()) return;
+        if (ctx.getSuggestions().size() >= maxTotalSuggestions || ctx.hasTimedOut()) break;
         for (String shard : e.getValue()) {
           Suggester suggester = ctx.session.getSuggester(MOVEREPLICA)
               .hint(Hint.COLL_SHARD, new Pair<>(e.getKey(), shard))
index 127012a..e5e9599 100644 (file)
@@ -69,7 +69,7 @@ public class Preference implements MapWriter {
     int result = 0;
     if (o1 instanceof Long && o2 instanceof Long) result = ((Long) o1).compareTo((Long) o2);
     else if (o1 instanceof Double && o2 instanceof Double) {
-      result = compareWithTolerance((Double) o1, (Double) o2, useApprox ? 1 : 1);
+      result = compareWithTolerance((Double) o1, (Double) o2, useApprox ? 1f : 0.01f);
     } else if (!o1.getClass().getName().equals(o2.getClass().getName())) {
       throw new RuntimeException("Unable to compare " + o1 + " of type: " + o1.getClass().getName() + " from " + r1.cells[idx].toString() + " and " + o2 + " of type: " + o2.getClass().getName() + " from " + r2.cells[idx].toString());
     }
@@ -78,7 +78,7 @@ public class Preference implements MapWriter {
             next.compare(r1, r2, useApprox)) : sort.sortval * result;
   }
 
-  static int compareWithTolerance(Double o1, Double o2, int percentage) {
+  static int compareWithTolerance(Double o1, Double o2, float percentage) {
     if (percentage == 0) return o1.compareTo(o2);
     if (o1.equals(o2)) return 0;
     double delta = Math.abs(o1 - o2);
index e168ff9..8f39b64 100644 (file)
@@ -73,6 +73,13 @@ class ReplicaCount  implements MapWriter {
     increment(info.getType());
   }
 
+  void increment(ReplicaCount count) {
+    nrt += count.nrt;
+    pull += count.pull;
+    tlog += count.tlog;
+  }
+
+
   public void increment(Replica.Type type) {
     switch (type) {
       case NRT:
@@ -90,6 +97,16 @@ class ReplicaCount  implements MapWriter {
   }
 
   @Override
+  public boolean equals(Object obj) {
+    if (obj instanceof ReplicaCount) {
+      ReplicaCount that = (ReplicaCount) obj;
+      return that.nrt == this.nrt && that.tlog == this.tlog && that.pull == this.pull;
+
+    }
+    return false;
+  }
+
+  @Override
   public String toString() {
     return Utils.toJSONString(this);
   }
index 78f32b3..f0bfafa 100644 (file)
@@ -20,7 +20,6 @@ package org.apache.solr.client.solrj.cloud.autoscaling;
 import java.util.Collection;
 import java.util.HashSet;
 import java.util.Set;
-import java.util.concurrent.atomic.AtomicInteger;
 
 import org.apache.solr.common.util.StrUtils;
 
@@ -30,16 +29,27 @@ class ReplicaVariable extends VariableBase {
     super(type);
   }
 
+  public static final String REPLICASCOUNT = "relevantReplicas";
+
+
+
+
   static int getRelevantReplicasCount(Policy.Session session, Condition cv, String collection, String shard) {
-    AtomicInteger totalReplicasOfInterest = new AtomicInteger(0);
+    int totalReplicasOfInterest = 0;
     Clause clause = cv.getClause();
     for (Row row : session.matrix) {
-      row.forEachReplica(replicaInfo -> {
-        if (clause.isMatch(replicaInfo, collection, shard))
-          totalReplicasOfInterest.incrementAndGet();
+      Integer perShardCount = row.computeCacheIfAbsent(collection, shard, REPLICASCOUNT, cv.clause, o -> {
+        int[] result = new int[1];
+        row.forEachReplica(collection, replicaInfo -> {
+          if (clause.isMatch(replicaInfo, collection, shard))
+            result[0]++;
+        });
+        return result[0];
       });
+      if (perShardCount != null)
+        totalReplicasOfInterest += perShardCount;
     }
-    return totalReplicasOfInterest.get();
+    return totalReplicasOfInterest;
   }
 
   @Override
index dcd5fba..318a9af 100644 (file)
@@ -27,8 +27,10 @@ import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
 import java.util.Random;
+import java.util.concurrent.atomic.AtomicLong;
 import java.util.function.BiConsumer;
 import java.util.function.Consumer;
+import java.util.function.Function;
 import java.util.stream.Collectors;
 
 import org.apache.solr.common.MapWriter;
@@ -50,10 +52,13 @@ public class Row implements MapWriter {
   public final String node;
   final Cell[] cells;
   //this holds the details of each replica in the node
-  public Map<String, Map<String, List<ReplicaInfo>>> collectionVsShardVsReplicas;
+  Map<String, Map<String, List<ReplicaInfo>>> collectionVsShardVsReplicas;
+
   boolean anyValueMissing = false;
   boolean isLive = true;
   Policy.Session session;
+  Map globalCache;
+  Map perCollCache;
 
   public Row(String node, List<Pair<String, Variable.Type>> params, List<String> perReplicaAttributes, Policy.Session session) {
     this.session = session;
@@ -70,16 +75,84 @@ public class Row implements MapWriter {
       if (NODE.equals(pair.first())) cells[i].val = node;
       if (cells[i].val == null) anyValueMissing = true;
     }
+    this.globalCache = new HashMap();
+    this.perCollCache = new HashMap();
+    isAlreadyCopied = true;
   }
 
+
+  public static final Map<String, CacheEntry> cacheStats = new HashMap<>();
+
+  static class CacheEntry implements MapWriter {
+    AtomicLong hits = new AtomicLong(), misses = new AtomicLong();
+
+    @Override
+    public void writeMap(EntryWriter ew) throws IOException {
+      ew.put("hits", hits.get());
+      ew.put("misses", misses.get());
+    }
+
+    public static boolean hit(String cacheName) {
+//      getCacheEntry(cacheName).hits.incrementAndGet();
+      return true;
+    }
+
+    private static CacheEntry getCacheEntry(String cacheName) {
+      CacheEntry cacheEntry = cacheStats.get(cacheName);
+      if (cacheEntry == null) {
+        cacheStats.put(cacheName, cacheEntry = new CacheEntry());
+      }
+      return cacheEntry;
+    }
+
+    public static boolean miss(String cacheName) {
+      getCacheEntry(cacheName).misses.incrementAndGet();
+      return true;
+    }
+  }
+
+
   public void forEachShard(String collection, BiConsumer<String, List<ReplicaInfo>> consumer) {
     collectionVsShardVsReplicas
         .getOrDefault(collection, Collections.emptyMap())
         .forEach(consumer);
   }
 
+
+  public <R> R computeCacheIfAbsent(String cacheName, Function<Object, R> supplier) {
+    R result = (R) globalCache.get(cacheName);
+    if (result != null) {
+      assert CacheEntry.hit(cacheName);
+      return result;
+    } else {
+      assert CacheEntry.miss(cacheName);
+      globalCache.put(cacheName, result = supplier.apply(cacheName));
+      return result;
+    }
+  }
+
+  public <R> R computeCacheIfAbsent(String coll, String shard, String cacheName, Object key, Function<Object, R> supplier) {
+    Map collMap = (Map) this.perCollCache.get(coll);
+    if (collMap == null) this.perCollCache.put(coll, collMap = new HashMap());
+    Map shardMap = (Map) collMap.get(shard);
+    if (shardMap == null) collMap.put(shard, shardMap = new HashMap());
+    Map cacheNameMap = (Map) shardMap.get(cacheName);
+    if (cacheNameMap == null) shardMap.put(cacheName, cacheNameMap = new HashMap());
+    R result = (R) cacheNameMap.get(key);
+    if (result == null) {
+      CacheEntry.miss(cacheName);
+      cacheNameMap.put(key, result = supplier.apply(key));
+      return result;
+    } else {
+      CacheEntry.hit(cacheName);
+      return result;
+    }
+  }
+
+
+
   public Row(String node, Cell[] cells, boolean anyValueMissing, Map<String,
-      Map<String, List<ReplicaInfo>>> collectionVsShardVsReplicas, boolean isLive, Policy.Session session) {
+      Map<String, List<ReplicaInfo>>> collectionVsShardVsReplicas, boolean isLive, Policy.Session session, Map perRowCache, Map globalCache) {
     this.session = session;
     this.node = node;
     this.isLive = isLive;
@@ -90,6 +163,8 @@ public class Row implements MapWriter {
     }
     this.anyValueMissing = anyValueMissing;
     this.collectionVsShardVsReplicas = collectionVsShardVsReplicas;
+    this.perCollCache = perRowCache;
+    this.globalCache = globalCache;
   }
 
   @Override
@@ -101,7 +176,7 @@ public class Row implements MapWriter {
   }
 
   Row copy(Policy.Session session) {
-    return new Row(node, cells, anyValueMissing, Utils.getDeepCopy(collectionVsShardVsReplicas, 3), isLive, session);
+    return new Row(node, cells, anyValueMissing, collectionVsShardVsReplicas, isLive, session, this.globalCache, this.perCollCache);
   }
 
   Object getVal(String name) {
@@ -147,11 +222,13 @@ public class Row implements MapWriter {
       log.error("more than 3 levels of recursion ", new RuntimeException());
       return this;
     }
+    lazyCopyReplicas(coll, shard);
     List<OperationInfo> furtherOps = new LinkedList<>();
     Consumer<OperationInfo> opCollector = it -> furtherOps.add(it);
     Row row = null;
     row = session.copy().getNode(this.node);
     if (row == null) throw new RuntimeException("couldn't get a row");
+    row.lazyCopyReplicas(coll, shard);
     Map<String, List<ReplicaInfo>> c = row.collectionVsShardVsReplicas.computeIfAbsent(coll, k -> new HashMap<>());
     List<ReplicaInfo> replicas = c.computeIfAbsent(shard, k -> new ArrayList<>());
     String replicaname = "SYNTHETIC." + new Random().nextInt(1000) + 1000;
@@ -172,6 +249,33 @@ public class Row implements MapWriter {
     return row;
   }
 
+  boolean isAlreadyCopied = false;
+
+  private void lazyCopyReplicas(String coll, String shard) {
+    globalCache = new HashMap();
+    Map cacheCopy = new HashMap<>(perCollCache);
+    cacheCopy.remove(coll);//todo optimize at shard level later
+    perCollCache = cacheCopy;
+    if (isAlreadyCopied) return;//caches need to be invalidated but the rest can remain as is
+
+    Map<String, Map<String, List<ReplicaInfo>>> replicasCopy = new HashMap<>(collectionVsShardVsReplicas);
+    Map<String, List<ReplicaInfo>> oneColl = replicasCopy.get(coll);
+    if (oneColl != null) {
+      replicasCopy.put(coll, Utils.getDeepCopy(oneColl, 2));
+    }
+    collectionVsShardVsReplicas = replicasCopy;
+    isAlreadyCopied = true;
+  }
+
+  boolean hasColl(String coll) {
+    return collectionVsShardVsReplicas.containsKey(coll);
+  }
+
+  public void createCollShard(Pair<String, String> collShard) {
+    Map<String, List<ReplicaInfo>> shardInfo = collectionVsShardVsReplicas.computeIfAbsent(collShard.first(), Utils.NEW_HASHMAP_FUN);
+    if (collShard.second() != null) shardInfo.computeIfAbsent(collShard.second(), Utils.NEW_ARRAYLIST_FUN);
+  }
+
 
   static class OperationInfo {
     final String coll, shard, node, cellName;
@@ -221,6 +325,7 @@ public class Row implements MapWriter {
     List<OperationInfo> furtherOps = new LinkedList<>();
     Consumer<OperationInfo> opCollector = it -> furtherOps.add(it);
     Row row = session.copy().getNode(this.node);
+    row.lazyCopyReplicas(coll, shard);
     Map<String, List<ReplicaInfo>> c = row.collectionVsShardVsReplicas.get(coll);
     if (c == null) return null;
     List<ReplicaInfo> r = c.get(shard);
index dfda8a2..3727d00 100644 (file)
@@ -23,7 +23,6 @@ import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.EnumMap;
-import java.util.HashMap;
 import java.util.HashSet;
 import java.util.LinkedHashMap;
 import java.util.List;
@@ -207,16 +206,14 @@ public abstract class Suggester implements MapWriter {
     for (Pair<String, String> shard : collectionShardPairs) {
       // if this is not a known collection from the existing clusterstate,
       // then add it
-      if (session.matrix.stream().noneMatch(row -> row.collectionVsShardVsReplicas.containsKey(shard.first()))) {
+      if (session.matrix.stream().noneMatch(row -> row.hasColl(shard.first()))) {
         session.addClausesForCollection(stateProvider, shard.first());
       }
-      for (Row row : session.matrix) {
-        Map<String, List<ReplicaInfo>> shardInfo = row.collectionVsShardVsReplicas.computeIfAbsent(shard.first(), it -> new HashMap<>());
-        if (shard.second() != null) shardInfo.computeIfAbsent(shard.second(), it -> new ArrayList<>());
-      }
+      for (Row row : session.matrix) row.createCollShard(shard);
     }
   }
 
+
   public Policy.Session getSession() {
     return session;
   }
@@ -337,6 +334,7 @@ public abstract class Suggester implements MapWriter {
       if (!errs.isEmpty() &&
           (executeInStrictMode || clause.strict)) errors.addAll(errs);
     }
+    session.violations = errors;
     if (!errors.isEmpty()) deviations = null;
     return errors;
   }
index b470985..769d950 100644 (file)
@@ -32,6 +32,7 @@ import static org.apache.solr.common.params.CollectionParams.CollectionAction.MO
 
 public class Suggestion {
   static class Ctx {
+    long endTime = -1;
     int max = Integer.MAX_VALUE;
     public Policy.Session session;
     public Violation violation;
@@ -60,14 +61,20 @@ public class Suggestion {
       return suggestions;
     }
 
+    public boolean hasTimedOut() {
+      return session.cloudManager.getTimeSource().getTimeNs() >= endTime;
+
+    }
+
     public boolean needMore() {
-      return suggestions.size() < max;
+      return suggestions.size() < max && !hasTimedOut();
     }
   }
 
   static void suggestNegativeViolations(Suggestion.Ctx ctx, Function<Set<String>, List<String>> shardSorter) {
     if (ctx.violation.coll == null) return;
     Set<String> shardSet = new HashSet<>();
+    if (!ctx.needMore()) return;
     for (Row node : ctx.session.matrix)
       node.forEachShard(ctx.violation.coll, (s, ri) -> {
         if (Policy.ANY.equals(ctx.violation.shard) || s.equals(ctx.violation.shard)) shardSet.add(s);
@@ -76,6 +83,7 @@ public class Suggestion {
     List<String> shards = shardSorter.apply(shardSet);
     outer:
     for (int i = 0; i < 5; i++) {
+      if (!ctx.needMore()) break;
       int totalSuggestions = 0;
       for (String shard : shards) {
         Suggester suggester = ctx.session.getSuggester(MOVEREPLICA)
@@ -102,6 +110,7 @@ public class Suggestion {
     if (ctx.violation == null) return;
     Double currentDelta = ctx.violation.replicaCountDelta;
     for (ReplicaInfoAndErr e : ctx.violation.getViolatingReplicas()) {
+      if (!ctx.needMore()) break;
       if (currentDelta <= 0) break;
       Suggester suggester = ctx.session.getSuggester(MOVEREPLICA)
           .forceOperation(true)
index 531c631..f164484 100644 (file)
@@ -147,7 +147,7 @@ public class SolrClientNodeStateProvider implements NodeStateProvider, MapWriter
 
   @Override
   public Map<String, Map<String, List<ReplicaInfo>>> getReplicaInfo(String node, Collection<String> keys) {
-    Map<String, Map<String, List<ReplicaInfo>>> result = nodeVsCollectionVsShardVsReplicaInfo.computeIfAbsent(node, s -> emptyMap());
+    Map<String, Map<String, List<ReplicaInfo>>> result = nodeVsCollectionVsShardVsReplicaInfo.computeIfAbsent(node, Utils.NEW_HASHMAP_FUN);
     if (!keys.isEmpty()) {
       Map<String, Pair<String, ReplicaInfo>> metricsKeyVsTagReplica = new HashMap<>();
       Row.forEachReplica(result, r -> {
index a1b34a2..e36091c 100644 (file)
@@ -35,6 +35,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
+import java.util.HashMap;
 import java.util.HashSet;
 import java.util.LinkedHashMap;
 import java.util.List;
@@ -44,6 +45,7 @@ import java.util.TreeMap;
 import java.util.TreeSet;
 import java.util.concurrent.Callable;
 import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicLong;
 import java.util.function.BiConsumer;
 import java.util.function.Function;
 import java.util.regex.Matcher;
@@ -81,6 +83,10 @@ import static java.util.Collections.unmodifiableSet;
 import static java.util.concurrent.TimeUnit.NANOSECONDS;
 
 public class Utils {
+  public static final Function NEW_HASHMAP_FUN = o -> new HashMap<>();
+  public static final Function NEW_ATOMICLONG_FUN = o -> new AtomicLong();
+  public static final Function NEW_ARRAYLIST_FUN = o -> new ArrayList<>();
+  public static final Function NEW_HASHSET_FUN = o -> new HashSet<>();
   private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
   
   public static Map getDeepCopy(Map map, int maxDepth) {
@@ -98,7 +104,7 @@ public class Utils {
     if (sorted) {
       copy = new TreeMap();
     } else {
-      copy = new LinkedHashMap();
+      copy = map instanceof LinkedHashMap?  new LinkedHashMap(map.size()): new HashMap(map.size());
     }
     for (Object o : map.entrySet()) {
       Map.Entry e = (Map.Entry) o;
@@ -293,6 +299,19 @@ public class Utils {
     }
   };
 
+  public static final Function<JSONParser, ObjectBuilder> MAPOBJBUILDER = jsonParser -> {
+    try {
+      return new ObjectBuilder(jsonParser){
+        @Override
+        public Object newObject() {
+          return new HashMap();
+        }
+      };
+    } catch (IOException e) {
+      throw new RuntimeException(e);
+    }
+  };
+
   public static Object fromJSON(InputStream is, Function<JSONParser, ObjectBuilder> objBuilderProvider) {
     try {
       return objBuilderProvider.apply(getJSONParser((new InputStreamReader(is, StandardCharsets.UTF_8)))).getVal();
diff --git a/solr/solrj/src/test-files/solrj/solr/autoscaling/testInfiniteLoop.json b/solr/solrj/src/test-files/solrj/solr/autoscaling/testInfiniteLoop.json
new file mode 100644 (file)
index 0000000..ff1bf2a
--- /dev/null
@@ -0,0 +1,13196 @@
+{
+  "diagnostics":{
+    "sortedNodes":[{
+      "node":"NODE_S_A0a3cb04c83b693d80:8983_solr",
+      "isLive":true,
+      "cores":20.0,
+      "freedisk":693.357551574707,
+      "totaldisk":999.755859375,
+      "replicas":{
+        "COLL_S_R":{"shard30":[{
+          "core_node61":{
+            "core":"COLL_S_R_shard30_replica_n58",
+            "shard":"shard30",
+            "collection":"COLL_S_R",
+            "node_name":"NODE_S_A0a3cb04c83b693d80:8983_solr",
+            "type":"NRT",
+            "leader":"true",
+            "base_url":"http://NODE_S_A0a3cb04c83b693d80:8983/solr",
+            "state":"active",
+            "force_set_state":"false",
+            "INDEX.sizeInGB":0.0037675881758332253}}]},
+        "COLL_S_M_1":{"shard9":[{
+          "core_node18":{
+            "core":"COLL_S_M_1_shard9_replica_n16",
+            "shard":"shard9",
+            "collection":"COLL_S_M_1",
+            "node_name":"NODE_S_A0a3cb04c83b693d80:8983_solr",
+            "type":"NRT",
+            "leader":"true",
+            "base_url":"http://NODE_S_A0a3cb04c83b693d80:8983/solr",
+            "state":"active",
+            "force_set_state":"false",
+            "INDEX.sizeInGB":6.426125764846802E-8}}]},
+        "COLL_E_V2_4":{"shard2":[{
+          "core_node8":{
+            "core":"COLL_E_V2_4_shard2_replica_n6",
+            "shard":"shard2",
+            "collection":"COLL_E_V2_4",
+            "node_name":"NODE_S_A0a3cb04c83b693d80:8983_solr",
+            "type":"NRT",
+            "leader":"true",
+            "base_url":"http://NODE_S_A0a3cb04c83b693d80:8983/solr",
+            "state":"active",
+            "force_set_state":"false",
+            "INDEX.sizeInGB":0.23103012703359127}}]},
+        "COLL_S_E_15":{
+          "shard13":[{
+            "core_node53":{
+              "core":"COLL_S_E_15_shard13_replica_n50",
+              "shard":"shard13",
+              "collection":"COLL_S_E_15",
+              "node_name":"NODE_S_A0a3cb04c83b693d80:8983_solr",
+              "type":"NRT",
+              "leader":"true",
+              "base_url":"http://NODE_S_A0a3cb04c83b693d80:8983/solr",
+              "state":"active",
+              "force_set_state":"false",
+              "INDEX.sizeInGB":1.257285475730896E-7}}],
+          "shard4":[{
+            "core_node17":{
+              "core":"COLL_S_E_15_shard4_replica_n14",
+              "shard":"shard4",
+              "collection":"COLL_S_E_15",
+              "node_name":"NODE_S_A0a3cb04c83b693d80:8983_solr",
+              "type":"NRT",
+              "leader":"true",
+              "base_url":"http://NODE_S_A0a3cb04c83b693d80:8983/solr",
+              "state":"active",
+              "force_set_state":"false",
+              "INDEX.sizeInGB":1.257285475730896E-7}}],
+          "shard18":[{
+            "core_node71":{
+              "core":"COLL_S_E_15_shard18_replica_n68",
+              "shard":"shard18",
+              "collection":"COLL_S_E_15",
+              "node_name":"NODE_S_A0a3cb04c83b693d80:8983_solr",
+              "type":"NRT",
+              "leader":"true",
+              "base_url":"http://NODE_S_A0a3cb04c83b693d80:8983/solr",
+              "state":"active",
+              "force_set_state":"false",
+              "INDEX.sizeInGB":1.257285475730896E-7}}],
+          "shard9":[{
+            "core_node35":{
+              "core":"COLL_S_E_15_shard9_replica_n32",
+              "shard":"shard9",
+              "collection":"COLL_S_E_15",
+              "node_name":"NODE_S_A0a3cb04c83b693d80:8983_solr",
+              "type":"NRT",
+              "leader":"true",
+              "base_url":"http://NODE_S_A0a3cb04c83b693d80:8983/solr",
+              "state":"active",
+              "force_set_state":"false",
+              "INDEX.sizeInGB":1.257285475730896E-7}}]},
+        "COLL_P_V_E_v2":{"shard3":[{
+          "core_node11":{
+            "core":"COLL_P_V_E_v2_shard3_replica_n8",
+            "shard":"shard3",
+            "collection":"COLL_P_V_E_v2",
+            "node_name":"NODE_S_A0a3cb04c83b693d80:8983_solr",
+            "type":"NRT",
+            "base_url":"http://NODE_S_A0a3cb04c83b693d80:8983/solr",
+            "state":"active",
+            "force_set_state":"false",
+            "INDEX.sizeInGB":8.222954365424812}}]},
+        "COLL_S_H_7":{"shard2":[{
+          "core_node5":{
+            "core":"COLL_S_H_7_shard2_replica_n2",
+            "shard":"shard2",
+            "collection":"COLL_S_H_7",
+            "node_name":"NODE_S_A0a3cb04c83b693d80:8983_solr",
+            "type":"NRT",
+            "leader":"true",
+            "base_url":"http://NODE_S_A0a3cb04c83b693d80:8983/solr",
+            "state":"active",
+            "force_set_state":"false",
+            "INDEX.sizeInGB":0.005126317963004112}}]},
+        "COLL_E_v2_5":{
+          "shard21":[{
+            "core_node85":{
+              "core":"COLL_E_v2_5_shard21_replica_n82",
+              "shard":"shard21",
+              "collection":"COLL_E_v2_5",
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