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Posted to issues@hbase.apache.org by "ramkrishna.s.vasudevan (JIRA)" <ji...@apache.org> on 2019/03/02 14:17:00 UTC
[jira] [Updated] (HBASE-21981) MMaped bucket cache IOEngine does
not work with persistence
[ https://issues.apache.org/jira/browse/HBASE-21981?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ramkrishna.s.vasudevan updated HBASE-21981:
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Summary: MMaped bucket cache IOEngine does not work with persistence (was: MMaped bucket cache IOEngines does not work with persistence)
> MMaped bucket cache IOEngine does not work with persistence
> -----------------------------------------------------------
>
> Key: HBASE-21981
> URL: https://issues.apache.org/jira/browse/HBASE-21981
> Project: HBase
> Issue Type: Bug
> Components: BucketCache
> Affects Versions: 2.1.3
> Reporter: ramkrishna.s.vasudevan
> Assignee: Anoop Sam John
> Priority: Major
> Fix For: 3.0.0, 2.2.0, 2.0.5, 2.3.0, 2.1.4
>
>
> The MMap based IOEngines does not retrieve the data back if 'hbase.bucketcache.persistent.path' is enabled. FileIOEngine works fine but only the FileMMapEngine has this problem.
> The reason is that we don't get the byte buffers in the proper order while reading back from the file in case of persistence.
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