yandrey321 commented on code in PR #10633:
URL: https://github.com/apache/ozone/pull/10633#discussion_r3546483921
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hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/key/OMKeyRequest.java:
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@@ -218,13 +224,27 @@ protected List< OmKeyLocationInfo >
allocateBlock(ScmClient scmClient,
}
throw ex;
}
+ // Cache the sorted order by pipeline nodes so blocks whose pipelines have
+ // the same datanodes are sorted once (mirrors the read path's caching).
+ final Map<List<DatanodeDetails>, List<? extends DatanodeDetails>>
sortedByNodes =
Review Comment:
Should we use concurrent map? How do we handle concurrent requests?
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