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Increase default write queue size #59464

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Jul 14, 2020
Merged

Increase default write queue size #59464

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Increase default write queue size
Tim-Brooks Jul 13, 2020
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Tim-Brooks Jul 14, 2020
11fa214
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Tim-Brooks Jul 14, 2020
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Tim-Brooks Jul 14, 2020
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9 changes: 9 additions & 0 deletions docs/reference/release-notes/7.9.asciidoc
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Expand Up @@ -22,3 +22,12 @@ Snapshot restore throttling::
default that's used for `indices.recovery.max_bytes_per_sec`. This means
that no behavioral change will be observed by clusters where the recovery
and restore settings had not been adapted from the defaults. {es-pull}58658[#58658]

Thread pool write queue size::
* The WRITE thread pool default queue size (`thread_pool.write.size`) has been
increased from 200 to 10000. A small queue size (200) caused issues when users
wanted to send small indexing requests with a high client count. Additional
memory-oriented back pressure has been introduced with the
`indexing_pressure.memory.limit` setting. This setting configures a limit to
the number of bytes allowed to be consumed by outstanding indexing requests.
{es-issue}59263[#59263]
2 changes: 1 addition & 1 deletion server/src/main/java/org/elasticsearch/threadpool/ThreadPool.java
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Expand Up @@ -172,7 +172,7 @@ public ThreadPool(final Settings settings, final ExecutorBuilder<?>... customBui
final int halfProcMaxAt10 = halfAllocatedProcessorsMaxTen(allocatedProcessors);
final int genericThreadPoolMax = boundedBy(4 * allocatedProcessors, 128, 512);
builders.put(Names.GENERIC, new ScalingExecutorBuilder(Names.GENERIC, 4, genericThreadPoolMax, TimeValue.timeValueSeconds(30)));
builders.put(Names.WRITE, new FixedExecutorBuilder(settings, Names.WRITE, allocatedProcessors, 200));
builders.put(Names.WRITE, new FixedExecutorBuilder(settings, Names.WRITE, allocatedProcessors, 10000));
builders.put(Names.GET, new FixedExecutorBuilder(settings, Names.GET, allocatedProcessors, 1000));
builders.put(Names.ANALYZE, new FixedExecutorBuilder(settings, Names.ANALYZE, 1, 16));
builders.put(Names.SEARCH, new AutoQueueAdjustingExecutorBuilder(settings,
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