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https://issues.apache.org/jira/browse/HBASE-21374?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16665907#comment-16665907
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mazhenlin commented on HBASE-21374:
-----------------------------------
encountered problems with jdk7:
1 Consumer not available in jdk7, defined a similar interface instead.
2 compute, merge of ConcurrentHashMap also not available, make it difficult to
remove unused entries without synchronized blocks. So HashMap with synchronized
blocks was used instead of ConcurrentHashMap, since I assumed that the cost to
acquire lock can be ignored compared to the full bulkload process.
> Backport HBASE-21342 to branch-1
> --------------------------------
>
> Key: HBASE-21374
> URL: https://issues.apache.org/jira/browse/HBASE-21374
> Project: HBase
> Issue Type: Task
> Reporter: Mike Drob
> Priority: Major
> Attachments: HBASE-21374.branch-1.001.patch
>
>
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