couchdb-mem3.git
8 years agoFix two bugs in the global balancing phase
Adam Kocoloski [Wed, 30 Oct 2013 15:05:41 +0000 (11:05 -0400)] 
Fix two bugs in the global balancing phase

* Nodes with 0 shards were being ignored because wrong datatype.
* The limit was being ignored because max not min.

BugzID: 24680

8 years agoAllow skip straight to global phase
Adam Kocoloski [Wed, 30 Oct 2013 14:00:08 +0000 (10:00 -0400)] 
Allow skip straight to global phase

When rebalancing a DB-per-user cluster with small Q values its typical
that

a) the local phase takes a loooong time, and
b) the local phase doesn't suggest any moves

While the local phase should still run at least once, we'll expose a
flag to skip straight to the global phase since we'll need to run the
plan generator many many times and we can't afford to wait.

BugzID: 24680

8 years agoRefuse to place shards on decom:true nodes
Adam Kocoloski [Wed, 23 Oct 2013 14:08:51 +0000 (10:08 -0400)] 
Refuse to place shards on decom:true nodes

BugzID: 24420

8 years agoRely on decom:true attribute to filter decom nodes
Adam Kocoloski [Wed, 23 Oct 2013 14:02:33 +0000 (10:02 -0400)] 
Rely on decom:true attribute to filter decom nodes

BugzID: 24420

8 years agoEnsure that the owner of a doc is also a host
Adam Kocoloski [Tue, 22 Oct 2013 19:29:00 +0000 (15:29 -0400)] 
Ensure that the owner of a doc is also a host

BugzID: 24395

8 years agoRewrite rebalancing plan generator
Adam Kocoloski [Wed, 25 Sep 2013 18:25:44 +0000 (14:25 -0400)] 
Rewrite rebalancing plan generator

This patch splits the functionality of the module out into three
classes or work:

* Fixing zoning and replica level violations
* Contracting a cluster
* Rebalancing shards across a cluster

The implementations of the first two features are pretty similar - find
the shards that need to be moved, then choose an optimal home for each
of them.  By default the contraction code will remove shards from nodes
in the "decom" zone, and the rebalancing code will ignore that zone
entirrely. An optimal home is a node that

a) is in the correct zone, and
b) has the fewest # of shards for the DB among nodes in the zone, and
c) has the fewest total # of shards among nodes satisfying a) and b)

The implementation of rebalancing is a bit more complicated.  The
rebalancing algorithm looks roughly like this

For DB in all_dbs:
    Ensure all nodes have at least (N*Q) div length(Nodes) shards
    Ensure no node has more than (N*Q) div length(Nodes) + 1 shards
For node in nodes:
    If node has more than TotalShards div length(Nodes) + 1 shards:
        Donate shard to another node

The net result is that each database is balanced across the cluster and
the cluster as a whole is globally balanced.

The current version of the module prints out shard move and copy
operations in a clou-friendly format via io:format.  It also returns a
list of {Op, #shard{}, node()} tuples representing the operations.

The rebalancer will stop after generating 1000 operations by default.
The limit can be customized by using the 1-arity versions of expand,
contract and fix_zoning, but note that the performance of the rebalancer
degrades as the number of pending operations increases.

BugzID: 23690
BugzID: 20770

8 years agoFix latent single-shard range hack
Paul J. Davis [Thu, 5 Sep 2013 19:08:48 +0000 (14:08 -0500)] 
Fix latent single-shard range hack

We had an off-by-one error when we fake #shard{} records for node local
databases. This fixes the issue. The bug was noticeable when attempting
to pass these shards to `fabric_view:is_progress_possible/1`.

BugzId: 22809

8 years agoUse a consistent commenting syntax
Adam Kocoloski [Mon, 19 Aug 2013 13:43:08 +0000 (09:43 -0400)] 
Use a consistent commenting syntax

8 years agoAddress comments from PR
Adam Kocoloski [Mon, 19 Aug 2013 13:40:38 +0000 (09:40 -0400)] 
Address comments from PR

8 years agoEnsure all shards are moved off non-target nodes
Adam Kocoloski [Fri, 16 Aug 2013 17:40:50 +0000 (13:40 -0400)] 
Ensure all shards are moved off non-target nodes

BugzID: 20742

8 years agoStabilize mem3_util:owner/2
Robert Newson [Wed, 31 Jul 2013 10:14:30 +0000 (11:14 +0100)] 
Stabilize mem3_util:owner/2

BugzID: 21413

8 years agoMove rotate_list to mem3_util
Robert Newson [Wed, 31 Jul 2013 10:14:15 +0000 (11:14 +0100)] 
Move rotate_list to mem3_util

8 years agoSupport balancing across a subset of nodes
Adam Kocoloski [Tue, 2 Jul 2013 18:30:09 +0000 (14:30 -0400)] 
Support balancing across a subset of nodes

mem3_balance implicitly assumed the set of nodes over which the DB is
hosted is expanding.  We need to make a couple of small changes in the
case of cluster contraction.

BugzID: 20742

8 years agoFix load_shards_from_disk/2
Robert Newson [Thu, 27 Jun 2013 18:19:24 +0000 (19:19 +0100)] 
Fix load_shards_from_disk/2

load_shards_from_disk/2 did not expect #ordered_shards to be returned
from load_shards_from_disk/1. Since it uses a list comprehension the
mistake is silently squashed, resulting in an empty list.

In production this manifests are the occasional failure, where 'n' is
calculated as 0, causing quorum reads to fail. The very next call
succeeds as it reads the cached versions and correctly downcasts.

BugzID: 20629

8 years agoPreserve key and incorporate range into rotation key
Robert Newson [Tue, 25 Jun 2013 11:37:33 +0000 (12:37 +0100)] 
Preserve key and incorporate range into rotation key

8 years agowe're not rotating by DbName any more
Robert Newson [Tue, 25 Jun 2013 11:36:59 +0000 (12:36 +0100)] 
we're not rotating by DbName any more

8 years agorefactor choose_ushards
Robert Newson [Tue, 25 Jun 2013 11:20:59 +0000 (12:20 +0100)] 
refactor choose_ushards

8 years agoZero out shard caches on upgrade
Adam Kocoloski [Fri, 21 Jun 2013 04:14:42 +0000 (00:14 -0400)] 
Zero out shard caches on upgrade

The mix of #shard and #ordered_shard records breaks ushards.  Different
nodes can start returning different results.

8 years agoAdd function to assist with rebalancing
Robert Newson [Wed, 3 Apr 2013 19:13:35 +0000 (20:13 +0100)] 
Add function to assist with rebalancing

This function takes either a database name or a list of shards and a
list of target nodes to balance the shards across. Every node with
less than a fair share of shards will steal shards from the node with
the most shards as long as both shards are in the same zone.

BugzID: 18638

8 years agoUse a private record for event listener state
Adam Kocoloski [Fri, 24 May 2013 19:03:54 +0000 (15:03 -0400)] 
Use a private record for event listener state

8 years agoFix trivial typo
Adam Kocoloski [Fri, 24 May 2013 19:00:32 +0000 (15:00 -0400)] 
Fix trivial typo

8 years agoBalance replication ownership across nodes
Adam Kocoloski [Thu, 23 May 2013 14:32:58 +0000 (10:32 -0400)] 
Balance replication ownership across nodes

The previous algorithm was biased towards low-numbered nodes, and in the
case of a 3 node cluster would declare db1 to be the owner of all
replications.  We can do better just by leveraging the existing
ushards code.

There's a possibility to refactor this as a new ushards/2 function if
that's perceived as useful.

BugzID: 19870

8 years agoUpdate to use the new couch_event application
Paul J. Davis [Tue, 23 Apr 2013 22:26:30 +0000 (17:26 -0500)] 
Update to use the new couch_event application

8 years agoChoose ushards according to persistent record
Robert Newson [Tue, 23 Apr 2013 21:54:48 +0000 (22:54 +0100)] 
Choose ushards according to persistent record

The order of nodes in the by_range section of "dbs" documents is now
promoted to the principal order for ushards. Ushards still accounts
for Liveness, selecting the first live replica and still supports
Spread by rotating this list using the CRC32 of the database name
(since many databases will have the same layout).

If by_range and by_node are not symmetrical then by_node is used and
order is undefined to match existing behavior.

8 years agoIf two shards differ we need to sync
Paul J. Davis [Tue, 16 Apr 2013 22:12:38 +0000 (17:12 -0500)] 
If two shards differ we need to sync

There's no security if two shards return different answers but it gives
us enough of a signal to know that we need to trigger a full on
synchronization.

BugzId: 18955

8 years agoMoving shard maps _membership endpoint to _shards db handler
Russell Branca [Fri, 12 Apr 2013 20:48:14 +0000 (16:48 -0400)] 
Moving shard maps _membership endpoint to _shards db handler

8 years agoAdd doc shard info endpoint
Russell Branca [Fri, 12 Apr 2013 19:06:58 +0000 (15:06 -0400)] 
Add doc shard info endpoint

8 years agoFix _membership/$DBNAME api endpoint
Russell Branca [Thu, 11 Apr 2013 18:18:12 +0000 (14:18 -0400)] 
Fix _membership/$DBNAME api endpoint

This switches the JSON key to be a binary, as required by jiffy.

Also, remove extraneous <<"parts">> path from the url.

Show full shard range.

8 years agoUpdate to use new multi rexi_server protocol
Paul J. Davis [Tue, 19 Mar 2013 03:57:46 +0000 (22:57 -0500)] 
Update to use new multi rexi_server protocol

8 years agoHandle the #doc_info case in changes_enumerator
Russell Branca [Wed, 18 Jun 2014 22:04:35 +0000 (15:04 -0700)] 
Handle the #doc_info case in changes_enumerator

This is to handle the special case where the user migrates a CouchDB
database to BigCouch and they have not yet compacted the
database. Once the database has been compacted, this #doc_info clause
should never be encountered.

8 years agoDon't log when ensuring dbs exist
Robert Newson [Tue, 3 Jun 2014 10:21:02 +0000 (11:21 +0100)] 
Don't log when ensuring dbs exist

8 years agoAdd function to determine shard membership locally 1843-feature-bigcouch
Robert Newson [Wed, 7 May 2014 13:48:25 +0000 (14:48 +0100)] 
Add function to determine shard membership locally

mem3:belongs/2 allows you to determine if a given doc id belongs to a
given shard (whether a #shard{} record or just the filename of a
shard) without looking up the shard map or making any remote
calls.

8 years agoChange API to function per level
Robert Newson [Wed, 12 Feb 2014 23:23:47 +0000 (23:23 +0000)] 
Change API to function per level

8 years agoSwitch to couch_log
Robert Newson [Wed, 12 Feb 2014 20:11:56 +0000 (20:11 +0000)] 
Switch to couch_log

8 years agoAdd license headers
Paul J. Davis [Tue, 11 Feb 2014 07:54:37 +0000 (01:54 -0600)] 
Add license headers

8 years agoAdd ejson_body to all mem3 open_doc attempts that need it
Robert Newson [Mon, 23 Dec 2013 16:55:10 +0000 (16:55 +0000)] 
Add ejson_body to all mem3 open_doc attempts that need it

8 years agoRemove references to margaret
Robert Newson [Thu, 19 Dec 2013 18:16:58 +0000 (18:16 +0000)] 
Remove references to margaret

8 years agoBuild with rebar
Robert Newson [Wed, 18 Dec 2013 14:04:59 +0000 (14:04 +0000)] 
Build with rebar

8 years agoFix up copyright headers
Robert Newson [Thu, 13 Jun 2013 12:42:11 +0000 (13:42 +0100)] 
Fix up copyright headers

8 years agoNew build system for mem3
Paul J. Davis [Tue, 5 Mar 2013 23:55:26 +0000 (17:55 -0600)] 
New build system for mem3

8 years agoRemove Cloudant build system remnants
Paul J. Davis [Wed, 20 Mar 2013 10:04:53 +0000 (05:04 -0500)] 
Remove Cloudant build system remnants

9 years agoMerge pull request #43 from cloudant/guard-against-empty-list
Adam Kocoloski [Thu, 7 Mar 2013 22:03:38 +0000 (14:03 -0800)] 
Merge pull request #43 from cloudant/guard-against-empty-list

Guard against empty list

9 years agoGuard against empty list
Robert Newson [Thu, 7 Mar 2013 21:29:35 +0000 (15:29 -0600)] 
Guard against empty list

Rotating an empty list gives badarith so add a guard clause, since the
result of rotating an empty list is well known.

BugzID: 17801

9 years agoMerge pull request #42 from cloudant/17801-spread-the-pain
Adam Kocoloski [Thu, 7 Mar 2013 20:17:36 +0000 (12:17 -0800)] 
Merge pull request #42 from cloudant/17801-spread-the-pain

BugzID: 17801

9 years agoSpread ushards load to more nodes
Robert Newson [Wed, 6 Mar 2013 14:29:13 +0000 (08:29 -0600)] 
Spread ushards load to more nodes

In some cases, notably q=1 databases, the current ushards algorithm
will always choose the same replica (because of the lists:sort and
order-preserving orddict). This causes a severely skewed load profile
if you have lots of these cases.

This patch rotates each group of nodes using the crc32 of the database
name, spreading out the load pretty evenly.

The patch is a little obscure because ushards still has remnants of
previous work (breaking nodes into the local, same zone, different
zone, but then deliberately merging local and same zone back together
because that was a silly idea).

BugzID: 17801

9 years agoIgnore other config changes
Adam Kocoloski [Thu, 28 Feb 2013 21:05:47 +0000 (16:05 -0500)] 
Ignore other config changes

9 years agoMerge pull request #40 from cloudant/13179-refactor-config-registration
Adam Kocoloski [Wed, 27 Feb 2013 19:32:11 +0000 (11:32 -0800)] 
Merge pull request #40 from cloudant/13179-refactor-config-registration

Use config app instead of couch_config

9 years agoUpdated the tests too
Adam Kocoloski [Wed, 27 Feb 2013 19:31:23 +0000 (14:31 -0500)] 
Updated the tests too

9 years agoUse config app instead of couch_config
Adam Kocoloski [Wed, 27 Feb 2013 02:18:13 +0000 (21:18 -0500)] 
Use config app instead of couch_config

BugzID: 13179

9 years agoMerge pull request #38 from cloudant/17185-reduce-log-spam
Adam Kocoloski [Thu, 21 Feb 2013 14:16:52 +0000 (06:16 -0800)] 
Merge pull request #38 from cloudant/17185-reduce-log-spam

Replace cache miss log with metrics

BugzID: 17185

9 years agoMerge pull request #39 from cloudant/15754-mem3-sync-backlog
Adam Kocoloski [Thu, 21 Feb 2013 14:14:31 +0000 (06:14 -0800)] 
Merge pull request #39 from cloudant/15754-mem3-sync-backlog

Add an API for mem3_sync queue lengths

BugzID: 15754

9 years agoAdd an API for mem3_sync queue lengths
Paul J. Davis [Thu, 21 Feb 2013 07:08:21 +0000 (01:08 -0600)] 
Add an API for mem3_sync queue lengths

9 years agoReplace cache miss log with metrics
Paul J. Davis [Sun, 10 Feb 2013 21:30:49 +0000 (15:30 -0600)] 
Replace cache miss log with metrics

This also adds metrics for cache hits and evictions as well as the miss.

9 years agoMerge pull request #36 from cloudant/13605-fix-shards-badmatch
Adam Kocoloski [Wed, 19 Dec 2012 16:07:35 +0000 (08:07 -0800)] 
Merge pull request #36 from cloudant/13605-fix-shards-badmatch

Protect against cache_hits on non-existant entries

BugzID: 13605

9 years agoProtect against cache_hits on non-existant entries
Paul J. Davis [Tue, 11 Dec 2012 21:11:15 +0000 (15:11 -0600)] 
Protect against cache_hits on non-existant entries

This can happen if we load a shard set from the cache and then eject the
shards before processing the cache_hit '$gen_cast' message. Instead of
trying to be fancy and reinserting the shards into the cache directly we
just rely on the fact that they'll be reinserted normally on the next
request.

9 years agoMerge pull request #35 from cloudant/15924-dont-resurrect-on-delete
Robert Newson [Thu, 6 Dec 2012 19:13:32 +0000 (11:13 -0800)] 
Merge pull request #35 from cloudant/15924-dont-resurrect-on-delete

Don't resurrect shards on deletion

9 years agoDon't resurrect shards on deletion
Robert Newson [Tue, 4 Dec 2012 19:42:05 +0000 (19:42 +0000)] 
Don't resurrect shards on deletion

In bigcouch and bigcouchplus (at least) the deleted property is a
binary, <<"deleted">>, and not an atom, deleted, as it used to
be. This causes mem3_shards to recreate a shard immediately after it
is deleted, leading to profound silliness.

BugzID: 15924

9 years agoMerge pull request #33 from cloudant/11602-sync-security
Adam Kocoloski [Mon, 1 Oct 2012 20:10:01 +0000 (13:10 -0700)] 
Merge pull request #33 from cloudant/11602-sync-security

BugzID: 11602

9 years agoMerge pull request #34 from cloudant/explicit_zone_placement
Adam Kocoloski [Mon, 1 Oct 2012 18:51:37 +0000 (11:51 -0700)] 
Merge pull request #34 from cloudant/explicit_zone_placement

Explicit zone placement

BugzID: 14920

9 years agoPlacement is always specified as a string
Robert Newson [Thu, 27 Sep 2012 22:47:49 +0000 (23:47 +0100)] 
Placement is always specified as a string

9 years agoRemove cruft
Robert Newson [Wed, 26 Sep 2012 23:37:54 +0000 (00:37 +0100)] 
Remove cruft

9 years agoExplicit zone placement
Robert Newson [Wed, 26 Sep 2012 23:38:09 +0000 (00:38 +0100)] 
Explicit zone placement

9 years agoCheck security objects during internal replication
Paul J. Davis [Tue, 25 Sep 2012 18:06:45 +0000 (13:06 -0500)] 
Check security objects during internal replication

If we detect that two shards have different values for a security object
during internal replication we automatically trigger a security object
synchronization.

BugzId: 11602

9 years agoRelax the mem3_sync_security fix constraint
Paul J. Davis [Tue, 25 Sep 2012 17:54:23 +0000 (12:54 -0500)] 
Relax the mem3_sync_security fix constraint

Instead of requiring that we only have an empty security object and a
single non-empty version that out numbers empties, we relax the fixable
constraint to be a single simple majority of (N/2)+1 objects of a single
value.

BugzId: 11602

9 years agoWait for rexi_server before adding a node
Paul J. Davis [Tue, 25 Sep 2012 22:05:27 +0000 (17:05 -0500)] 
Wait for rexi_server before adding a node

The race condition between a nodeup event and rexi_server starting was
causing some superfluous errors. This just waits for rexi_server to boot
before notifying mem3_sync_nodes.

9 years agoMerge pull request #32 from cloudant/14654-mem3-sync-stuck-replications
Adam Kocoloski [Fri, 7 Sep 2012 14:28:11 +0000 (07:28 -0700)] 
Merge pull request #32 from cloudant/14654-mem3-sync-stuck-replications

Fix stuck internal replications after node down

BugzID: 14654

9 years agoFix stuck internal replications after node down
Paul J. Davis [Fri, 7 Sep 2012 06:57:03 +0000 (01:57 -0500)] 
Fix stuck internal replications after node down

We weren't removing entries from the dict tracking what was in the job
queue. This looks like a bug after the switch from tuples to the #job{}
record which means its probably been around for quite awhile. Simple fix
is simply to use the correct dict key.

BugzId: 14654

9 years agoMerge pull request #31 from cloudant/14348-node-redirects
Adam Kocoloski [Wed, 22 Aug 2012 13:29:18 +0000 (06:29 -0700)] 
Merge pull request #31 from cloudant/14348-node-redirects

Configurable redirect of mem3 push jobs

BugzID: 14348

9 years agoConfigurable redirect of mem3 push jobs
Robert Newson [Tue, 21 Aug 2012 16:31:08 +0000 (17:31 +0100)] 
Configurable redirect of mem3 push jobs

In order to faciliate smoother node replacements, mem3 can be
configured to redirect push jobs intended for one node (the failed
one) to another (its replacement). e.g,

[mem3.redirects]
dbcore@db1.foo.cloudant.com = dbcore@db2.foo.cloudant.com

BugzID: 14348

10 years agoRemove obsolete appup
Adam Kocoloski [Wed, 6 Jun 2012 20:58:12 +0000 (16:58 -0400)] 
Remove obsolete appup

10 years agoMerge 'origin/replicator', closes #16
Adam Kocoloski [Wed, 6 Jun 2012 19:51:58 +0000 (15:51 -0400)] 
Merge 'origin/replicator', closes #16

Conflicts:
src/mem3_rep_manager.erl
src/mem3_sup.erl
src/mem3_util.erl

Case 13884

10 years agoAdd upgrade instructions
Adam Kocoloski [Tue, 5 Jun 2012 20:19:16 +0000 (16:19 -0400)] 
Add upgrade instructions

10 years agoExport live_shards/2
Adam Kocoloski [Tue, 5 Jun 2012 17:52:32 +0000 (13:52 -0400)] 
Export live_shards/2

10 years agoRemove unused include_lib
Adam Kocoloski [Mon, 4 Jun 2012 21:07:36 +0000 (17:07 -0400)] 
Remove unused include_lib

Eventually we should insert the validation function automatically.

BugzID: 13780

10 years agoAvoid #changes_args.db_open_options for compatibility
Adam Kocoloski [Mon, 4 Jun 2012 21:06:46 +0000 (17:06 -0400)] 
Avoid #changes_args.db_open_options for compatibility

We'll add it once we deploy the new version of the #changes_args record.

BugzID: 13780

10 years agoLook for 'deleted' and <<"deleted">> for compatibility
Adam Kocoloski [Mon, 4 Jun 2012 15:11:36 +0000 (11:11 -0400)] 
Look for 'deleted' and <<"deleted">> for compatibility

BugzID: 13780

10 years agoFix error causing crash on add_node
Adam Kocoloski [Mon, 4 Jun 2012 14:58:40 +0000 (10:58 -0400)] 
Fix error causing crash on add_node

10 years agoMerge branch '1.3.x'
Adam Kocoloski [Fri, 1 Jun 2012 16:03:55 +0000 (12:03 -0400)] 
Merge branch '1.3.x'

Conflicts:
src/mem3.erl
src/mem3_cache.erl
src/mem3_nodes.erl
src/mem3_rep.erl
src/mem3_sup.erl
src/mem3_sync.erl
src/mem3_sync_event.erl

BugzID: 13780

10 years agoMerge pull request #30 from cloudant/13606-node-info-ets
Adam Kocoloski [Fri, 25 May 2012 14:39:47 +0000 (07:39 -0700)] 
Merge pull request #30 from cloudant/13606-node-info-ets

Publish node metadata in a protected ets table

BugzID: 13606

10 years agoRemove remaining references to #state.nodes
Adam Kocoloski [Thu, 24 May 2012 16:43:23 +0000 (12:43 -0400)] 
Remove remaining references to #state.nodes

10 years agoPublish node metadata in a protected ets table
Adam Kocoloski [Tue, 22 May 2012 01:32:22 +0000 (21:32 -0400)] 
Publish node metadata in a protected ets table

This allows for far cheaper access to the zone information.  The
fallback to gen_server:calls is only for the initial hot upgrade and can
be removed afterwards along with the code_change.

BugzID: 13606

10 years agoFix edge condition when loading shards from disk
Paul J. Davis [Fri, 11 May 2012 23:31:18 +0000 (18:31 -0500)] 
Fix edge condition when loading shards from disk

BugzId: 13386

10 years agoRemove custom appup
Adam Kocoloski [Tue, 8 May 2012 17:04:10 +0000 (13:04 -0400)] 
Remove custom appup

10 years agoDon't include deleted dbs in mem3:fold_shards/2
Paul J. Davis [Tue, 8 May 2012 01:12:51 +0000 (20:12 -0500)] 
Don't include deleted dbs in mem3:fold_shards/2

The `delete` option was passed to couch_db:open_doc/2 which ended up
causing deleted databases to be included in mem3:fold_shards/2. This is
counterintuitive so is being removed.

10 years agoMerge pull request #29 from cloudant/13511-1.3.x-improve-internal-replicator
Adam Kocoloski [Mon, 7 May 2012 17:36:20 +0000 (10:36 -0700)] 
Merge pull request #29 from cloudant/13511-1.3.x-improve-internal-replicator

Improve internal replicator configuration

BugzID: 13511

10 years agoImprove internal replicator configuration
Paul J. Davis [Sun, 29 Apr 2012 17:07:52 +0000 (12:07 -0500)] 
Improve internal replicator configuration

This work is needed to support the internal replication requirements for
cluster elasticity. This adds three new options:

  * batch_size - The number of revisions to replicate in a single batch
  * batch_count - The number of batches to replicate. The special value
    `all` means to replicate until finished.
  * filter - A 1-arity function that takes a #full_doc_info{} record and
    returns `keep` or `discard` that determines if that doc should be
    included in the replication.

10 years agoPut mem3_sync replication exit messages on one line
Adam Kocoloski [Thu, 3 May 2012 20:13:55 +0000 (16:13 -0400)] 
Put mem3_sync replication exit messages on one line

10 years agoMerge pull request #28 from cloudant/13529-reconfigure-ring-on-nodeup
Adam Kocoloski [Thu, 3 May 2012 17:56:44 +0000 (10:56 -0700)] 
Merge pull request #28 from cloudant/13529-reconfigure-ring-on-nodeup

Reconfigure ring on nodeup events

BugzID: 13529

10 years agoDeduplicate lookup of special local databases
Robert Newson [Thu, 3 May 2012 13:48:16 +0000 (14:48 +0100)] 
Deduplicate lookup of special local databases

10 years agoReconfigure ring replications on nodeup
Adam Kocoloski [Thu, 3 May 2012 13:20:37 +0000 (09:20 -0400)] 
Reconfigure ring replications on nodeup

BugzID: 13529

10 years agoReply immediately if we already enqeueued the job
Adam Kocoloski [Wed, 2 May 2012 20:12:03 +0000 (16:12 -0400)] 
Reply immediately if we already enqeueued the job

10 years agoReally remove the Job from the Q
Adam Kocoloski [Wed, 2 May 2012 20:09:03 +0000 (16:09 -0400)] 
Really remove the Job from the Q

10 years agoReorder supervision tree to start mem3_nodes earlier
Adam Kocoloski [Wed, 2 May 2012 19:01:44 +0000 (15:01 -0400)] 
Reorder supervision tree to start mem3_nodes earlier

mem3_sync requires mem3_nodes to be running during init.

10 years agoMerge pull request #20 from cloudant/13470-make-ushards-zone-aware_master
Adam Kocoloski [Tue, 1 May 2012 18:27:05 +0000 (11:27 -0700)] 
Merge pull request #20 from cloudant/13470-make-ushards-zone-aware_master

Reimplement mem3:ushards to honor all 5 properties

BugzID: 13470

10 years agoAdd upgrade instructions for .4,.6 -> .7
Adam Kocoloski [Tue, 1 May 2012 14:52:53 +0000 (10:52 -0400)] 
Add upgrade instructions for .4,.6 -> .7

10 years agoMerge pull request #27 from cloudant/fix-initial-sync
Adam Kocoloski [Tue, 1 May 2012 14:42:54 +0000 (07:42 -0700)] 
Merge pull request #27 from cloudant/fix-initial-sync

Add a manager for node syncrhonization

10 years agoAdd a manager for node synchronization
Paul J. Davis [Tue, 1 May 2012 03:23:45 +0000 (22:23 -0500)] 
Add a manager for node synchronization

10 years agoDon't be dumb about response formats
Adam Kocoloski [Tue, 1 May 2012 01:02:02 +0000 (21:02 -0400)] 
Don't be dumb about response formats

10 years agoGuard code_change to prevent future surprises
Adam Kocoloski [Mon, 30 Apr 2012 21:22:33 +0000 (17:22 -0400)] 
Guard code_change to prevent future surprises

10 years agoRemove obsolete appup
Adam Kocoloski [Mon, 30 Apr 2012 21:22:05 +0000 (17:22 -0400)] 
Remove obsolete appup