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[DOCS] Update merge docs to reflect the max_merge_at_once property

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Simon Willnauer 2014-04-15 15:23:25 +02:00
parent 320a206352
commit 9898eed30c
1 changed files with 13 additions and 1 deletions
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14
docs/reference/index-modules/merge.asciidoc
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@ -209,4 +209,16 @@ The maximum number of threads to perform the merge operation. Defaults to
A merge scheduler that simply does each merge sequentially using the
calling thread (blocking the operations that triggered the merge or the
index operation).
index operation). This merge scheduler has a merge thread pool that
explicitly schedules merges, and it makes sure that merges are serial
within a shard, yet concurrent across multiple shards.
The scheduler supports the following settings:
`index.merge.scheduler.max_merge_at_once`::
The maximum number of merges a single merge run performs. This setting prevents
executing unlimited amount of merges in a loop until another shards has a
chance to get a merge thread from the pool. If this limit is reached the
merge thread returns to the pool and continues once the the call to a single
shards is executed. The default is `5`