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https://issues.apache.org/jira/browse/HBASE-2179?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Gray resolved HBASE-2179.
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Resolution: Duplicate
Fixed as part of HBASE-2248
> get performance problem with concurrent reads
> ---------------------------------------------
>
> Key: HBASE-2179
> URL: https://issues.apache.org/jira/browse/HBASE-2179
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: ryan rawson
> Assignee: ryan rawson
> Fix For: 0.21.0
>
>
> a get obtains a row lock before reading, which then blocks all other gets and
> puts to that row. on highly concurrent rows this reduces our performance and
> needlessly serializes reads.
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