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https://issues.apache.org/jira/browse/HBASE-19435?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16282810#comment-16282810
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Zach York commented on HBASE-19435:
-----------------------------------
I have traced the original issue to happening during/after compactions
(typically major compactions). However, this is one area of HBase I haven't dug
into at all. Does anyone have any suggestions on where to start looking?
Particularly any place that has relation to the cache (flushing, removing
items, repopulating, etc).
Thanks!
> Reopen Files for ClosedChannelException in BucketCache
> ------------------------------------------------------
>
> Key: HBASE-19435
> URL: https://issues.apache.org/jira/browse/HBASE-19435
> Project: HBase
> Issue Type: Bug
> Components: BucketCache
> Affects Versions: 2.0.0, 1.3.1
> Reporter: Zach York
> Assignee: Zach York
> Fix For: 1.4.1, 2.0.0-beta-1
>
> Attachments: HBASE-19435.branch-1.001.patch,
> HBASE-19435.master.001.patch, HBASE-19435.master.002.patch,
> HBASE-19435.master.003.patch, HBASE-19435.master.004.patch,
> HBASE-19435.master.005.patch, HBASE-19435.master.006.patch,
> HBASE-19435.master.007.patch, HBASE-19435.master.007.patch
>
>
> When using the FileIOEngine for BucketCache, the cache will be disabled if
> the connection is interrupted or closed. HBase will then get
> ClosedChannelExceptions trying to access the file. After 60s, the RS will
> disable the cache. This causes severe read performance degradation for
> workloads that rely on this cache. FileIOEngine never tries to reopen the
> connection. This JIRA is to reopen files when the BucketCache encounters a
> ClosedChannelException.
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