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Force merge with only_expunge_deletes does not honour max_num_segments #43102

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ywelsch opened this issue Jun 11, 2019 · 1 comment · Fixed by #44761
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Force merge with only_expunge_deletes does not honour max_num_segments #43102

ywelsch opened this issue Jun 11, 2019 · 1 comment · Fixed by #44761
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@tlrx
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>bug :Distributed/Engine Anything around managing Lucene and the Translog in an open shard.

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@ywelsch
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ywelsch commented Jun 11, 2019

Force merge requests where only_expunge_deletes is set to true do not honour other request parameters such as max_num_segments. We should throw an exception when those two parameters are set at the same time, given that we can't do both.
@ywelsch ywelsch added >bug :Distributed/Engine Anything around managing Lucene and the Translog in an open shard. labels Jun 11, 2019
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Pinging @elastic/es-distributed

@dnhatn dnhatn added the help wanted adoptme label Jun 12, 2019
@tlrx tlrx self-assigned this Jul 23, 2019
@tlrx tlrx removed the help wanted adoptme label Jul 23, 2019
@tlrx tlrx mentioned this issue Jul 23, 2019
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tlrx added a commit that referenced this issue Jul 26, 2019
@tlrx
Force Merge should reject requests with only_expunge_deletes and `m…
321c2b8 
…ax_num_segments` set (#44761)

This commit changes the ForceMergeRequest.validate() method so that it does 
not accept the parameters only_expunge_deletes and max_num_segments 
to be set at the same time.

The motivation is that InternalEngine.forceMerge() just ignores the max. number 
of segments parameter when the only expunge parameter is set to true, leaving 
the wrong impression to the user that max. number of segments has been applied. 
It also changes InternalEngine.forceMerge() so that it now throws an exception 
when both parameters are set, and modifies tests where needed.

Because it changes the behavior of the REST API I marked this as >breaking. 

Closes #43102
jkakavas pushed a commit that referenced this issue Jul 31, 2019
@tlrx @jkakavas
Force Merge should reject requests with only_expunge_deletes and `m…
df9b97a 
…ax_num_segments` set (#44761)

This commit changes the ForceMergeRequest.validate() method so that it does 
not accept the parameters only_expunge_deletes and max_num_segments 
to be set at the same time.

The motivation is that InternalEngine.forceMerge() just ignores the max. number 
of segments parameter when the only expunge parameter is set to true, leaving 
the wrong impression to the user that max. number of segments has been applied. 
It also changes InternalEngine.forceMerge() so that it now throws an exception 
when both parameters are set, and modifies tests where needed.

Because it changes the behavior of the REST API I marked this as >breaking. 

Closes #43102
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>bug :Distributed/Engine Anything around managing Lucene and the Translog in an open shard.
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