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Prevent order being lost for _nodes API filters #42045

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merged 3 commits into from
May 10, 2019

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astefan
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@astefan astefan commented May 9, 2019

This PR fixes a bug that made the ordering of nodeIds values to be lost. The order in which the node filters are specified is important as it dictates which nodes are being kept and which not in the list for which the metrics are retrieved.

Fixes #41885.

@astefan astefan added the :Distributed/Distributed A catch all label for anything in the Distributed Area. If you aren't sure, use this one. label May 10, 2019
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Pinging @elastic/es-distributed

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I've left one comment, looking good otherwise

boolean isMetricsOnly = ALLOWED_METRICS.containsAll(metricsOrNodeIds);
if (isMetricsOnly) {
nodeIds = new String[]{"_all"};
metrics = metricsOrNodeIds;
} else {
nodeIds = metricsOrNodeIds.toArray(new String[]{});
nodeIds = Strings.splitStringByCommaToArray(nodeId);
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splitStringByCommaToArray does not trim whitespace I think whereas tokenizeByCommaToSet did . If we don't want to change the parsing, we should use tokenizeToStringArray here I think.

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astefan commented May 10, 2019

@ywelsch thanks. I made the change, but also in a second place where the same parsing method was used.

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LGTM

@astefan astefan merged commit 74a7438 into elastic:master May 10, 2019
@astefan astefan deleted the 41885_fix branch May 10, 2019 16:38
astefan added a commit to astefan/elasticsearch that referenced this pull request May 10, 2019
* Switch to using a list instead of a Set for the filters, so that the
order of these filters is kept.

(cherry picked from commit 74a7438)
jasontedor added a commit to jasontedor/elasticsearch that referenced this pull request May 10, 2019
* elastic/master: (84 commits)
  [ML] adds geo_centroid aggregation support to data frames (elastic#42088)
  Add documentation for calendar/fixed intervals (elastic#41919)
  Remove global checkpoint assertion in peer recovery (elastic#41987)
  Don't create tempdir for cli scripts (elastic#41913)
  Fix debian-8 update (elastic#42056)
  Cleanup plugin bin directories (elastic#41907)
  Prevent order being lost for _nodes API filters (elastic#42045)
  Change IndexAnalyzers default analyzer access (elastic#42011)
  Remove reference to fs.data.spins in docs
  Mute failing AsyncTwoPhaseIndexerTests
  Remove close method in PageCacheRecycler/Recycler (elastic#41917)
  [ML] adding pivot.max_search_page_size option for setting paging size (elastic#41920)
  Docs: Tweak list formatting
  Simplify handling of keyword field normalizers (elastic#42002)
  [ML] properly nesting objects in document source (elastic#41901)
  Remove extra `ms` from log message (elastic#42068)
  Increase the sample space for random inner hits name generator (elastic#42057)
  Recognise direct buffers in heap size docs (elastic#42070)
  shouldRollGeneration should execute under read lock (elastic#41696)
  Wait for active shard after close in mixed cluster (elastic#42029)
  ...
astefan added a commit that referenced this pull request May 10, 2019
* Switch to using a list instead of a Set for the filters, so that the
order of these filters is kept.

(cherry picked from commit 74a7438)
gurkankaymak pushed a commit to gurkankaymak/elasticsearch that referenced this pull request May 27, 2019
* Switch to using a list instead of a Set for the filters, so that the
order of these filters is kept.
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Nodes types filters order not kept for _nodes API
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