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https://issues.apache.org/jira/browse/HDDS-288?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16554849#comment-16554849
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Tsz Wo Nicholas Sze commented on HDDS-288:
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HDDS-288.20180724.patch: 1st patch.
> Fix bugs in OpenContainerBlockMap
> ---------------------------------
>
> Key: HDDS-288
> URL: https://issues.apache.org/jira/browse/HDDS-288
> Project: Hadoop Distributed Data Store
> Issue Type: Improvement
> Reporter: Tsz Wo Nicholas Sze
> Assignee: Tsz Wo Nicholas Sze
> Priority: Major
> Attachments: HDDS-288.20180724.patch
>
>
> - OpenContainerBlockMap should not be synchronized for a better performance.
> - addChunkToMap may add the same chunk twice. See the comments below.
> {code}
> keyDataSet.putIfAbsent(blockID.getLocalID(), getKeyData(info,
> blockID)); // (1) when id is absent, it puts
> keyDataSet.computeIfPresent(blockID.getLocalID(), (key, value) -> { //
> (2) now, the id is present, it adds again.
> value.addChunk(info);
> return value;
> });
> {code}
> - In removeContainer(..), use remove(..) instead of computeIfPresent(..).
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