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Switch back to ConcurrentMergeScheduler as the default #5817

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s1monw opened this issue Apr 15, 2014 · 1 comment · Fixed by #5818
Closed

Switch back to ConcurrentMergeScheduler as the default #5817

s1monw opened this issue Apr 15, 2014 · 1 comment · Fixed by #5818

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@s1monw
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s1monw commented Apr 15, 2014

Load tests showed that SerialMS has problems to keep up with the merges under high load. We should switch back to CMS until we have a better story to balance merge threads / efforts across shards on a single node.

@kimchy
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kimchy commented Apr 15, 2014

++

s1monw added a commit to s1monw/elasticsearch that referenced this issue Apr 15, 2014
Load tests showed that SerialMS has problems to keep up with
the merges under high load. We should switch back to CMS
until we have a better story to balance merge
threads / efforts across shards on a single node.

Closes elastic#5817
s1monw added a commit that referenced this issue Apr 15, 2014
Load tests showed that SerialMS has problems to keep up with
the merges under high load. We should switch back to CMS
until we have a better story to balance merge
threads / efforts across shards on a single node.

Closes #5817
s1monw added a commit that referenced this issue Apr 15, 2014
Load tests showed that SerialMS has problems to keep up with
the merges under high load. We should switch back to CMS
until we have a better story to balance merge
threads / efforts across shards on a single node.

Closes #5817
jpountz added a commit that referenced this issue Apr 2, 2015
1.1.0 is affected by #5817 which prevents merges from keeping up with the
indexing rate. As a consequence it generates lots of segments and makes bw
compat tests slow. So I added a special case for this version to index fewer
documents.
@clintongormley clintongormley added the :Core/Infra/Core Core issues without another label label Jun 8, 2015
mute pushed a commit to mute/elasticsearch that referenced this issue Jul 29, 2015
Load tests showed that SerialMS has problems to keep up with
the merges under high load. We should switch back to CMS
until we have a better story to balance merge
threads / efforts across shards on a single node.

Closes elastic#5817
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3 participants