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Reduce index.shard.recovery.concurrent_streams from 5 to 3 to reduce the load when doing recovery, closes #2199. 

the index.shard.recovery.concurrent_streams controls how many streams are opened from a recovery source to a recovery target to transfer index files. Reduce it from 5 to 3 to reduce the load when doing recovery (for example, due to relocation).

Note, recent changes in network buffering will mean that recovery will progress considerably faster, so this change will not affect recovery times.
This commit is contained in:
Shay Banon 2012-08-23 13:20:54 +02:00
parent 37b33cf77d
commit 1f3b0d4144
1 changed files with 1 additions and 1 deletions
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src/main/java/org/elasticsearch/indices/recovery/RecoverySettings.java
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@ -67,7 +67,7 @@ public class RecoverySettings extends AbstractComponent {
this.translogSize = componentSettings.getAsBytesSize("translog_size", settings.getAsBytesSize("index.shard.recovery.translog_size", new ByteSizeValue(512, ByteSizeUnit.KB)));
this.compress = componentSettings.getAsBoolean("compress", true);
this.concurrentStreams = componentSettings.getAsInt("concurrent_streams", settings.getAsInt("index.shard.recovery.concurrent_streams", 5));
this.concurrentStreams = componentSettings.getAsInt("concurrent_streams", settings.getAsInt("index.shard.recovery.concurrent_streams", 3));
this.concurrentStreamPool = EsExecutors.newScalingExecutorService(0, concurrentStreams, 60, TimeUnit.SECONDS, EsExecutors.daemonThreadFactory(settings, "[recovery_stream]"));
this.maxSizePerSec = componentSettings.getAsBytesSize("max_size_per_sec", new ByteSizeValue(0));