Repo analysis: allow configuration of register ops #102051
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Adds the `?register_operation_count` parameter that allows to control the number of register operations separately from the number of regular blob operations.
DaveCTurner
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Hi @DaveCTurner, I've created a changelog YAML for you. |
ywangd
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Nov 13, 2023
.../src/main/java/org/elasticsearch/repositories/blobstore/testkit/RepositoryAnalyzeAction.java
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| @@ -488,7 +488,7 @@ public void run() { | |||
| ) | |||
| ) | |||
| ) { | |||
| final int registerOperations = Math.max(nodes.size(), request.getConcurrency()); | |||
| final int registerOperations = Math.max(nodes.size(), request.getRegisterOperationCount()); | |||
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This doc says the number of register operation defaults to 10. But the actual number is a max between number of nodes and number of register operations. Should we explain this nuance in the doc?
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I'm inclined to say no, because I tried describing this in the docs and it just seemed to make it harder to understand. We do more uncontended register ops too because they carry on until the contended ones finish. I'd be amazed if anyone notices this in practice.
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Eh how about a93f159? Added the word minimum to those docs, I think that covers everything simply enough.
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| synchronized (registerMutex) { | ||
| witness = registers.computeIfAbsent(key, ignored -> new BytesRegister()).compareAndExchange(expected, updated); |
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Does this synchronization introduce an artificial serialization of operations that means we are not really testing compareAndExchange in a concurrent fashion? Is this a problem?
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No, the correctness of this compareAndExchange (itself implemented as a synchronized method) isn't really the subject of this test. I added a comment in 2b4b3c7.
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davidkyle
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Nov 13, 2023
Adds the `?register_operation_count` parameter that allows to control the number of register operations separately from the number of regular blob operations.
DaveCTurner
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Nov 14, 2023
In 8.12 users can configure the number of register operations performed by repository analysis, but this configuration is not available in earlier versions. Nonetheless, we should at least mention that repository analysis does some register operations. This commit backports the few relevant lines of the docs changes from elastic#102051 to earlier branches. Relates elastic#102050
elasticsearchmachine
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Nov 14, 2023
In 8.12 users can configure the number of register operations performed by repository analysis, but this configuration is not available in earlier versions. Nonetheless, we should at least mention that repository analysis does some register operations. This commit backports the few relevant lines of the docs changes from #102051 to earlier branches. Relates #102050
DaveCTurner
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Nov 14, 2023
In 8.12 users can configure the number of register operations performed by repository analysis, but this configuration is not available in earlier versions. Nonetheless, we should at least mention that repository analysis does some register operations. This commit backports the few relevant lines of the docs changes from elastic#102051 to earlier branches. Relates elastic#102050
DaveCTurner
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Nov 14, 2023
In 8.12 users can configure the number of register operations performed by repository analysis, but this configuration is not available in earlier versions. Nonetheless, we should at least mention that repository analysis does some register operations. This commit backports the few relevant lines of the docs changes from elastic#102051 to earlier branches. Relates elastic#102050
DaveCTurner
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Nov 14, 2023
In 8.12 users can configure the number of register operations performed by repository analysis, but this configuration is not available in earlier versions. Nonetheless, we should at least mention that repository analysis does some register operations. This commit backports the few relevant lines of the docs changes from elastic#102051 to earlier branches. Relates elastic#102050
elasticsearchmachine
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Nov 14, 2023
In 8.12 users can configure the number of register operations performed by repository analysis, but this configuration is not available in earlier versions. Nonetheless, we should at least mention that repository analysis does some register operations. This commit backports the few relevant lines of the docs changes from #102051 to earlier branches. Relates #102050
elasticsearchmachine
pushed a commit
that referenced
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Nov 14, 2023
In 8.12 users can configure the number of register operations performed by repository analysis, but this configuration is not available in earlier versions. Nonetheless, we should at least mention that repository analysis does some register operations. This commit backports the few relevant lines of the docs changes from #102051 to earlier branches. Relates #102050
elasticsearchmachine
pushed a commit
that referenced
this pull request
Nov 14, 2023
In 8.12 users can configure the number of register operations performed by repository analysis, but this configuration is not available in earlier versions. Nonetheless, we should at least mention that repository analysis does some register operations. This commit backports the few relevant lines of the docs changes from #102051 to earlier branches. Relates #102050
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Adds the
?register_operation_countparameter that allows to controlthe number of register operations separately from the number of regular
blob operations.