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From "Zach York (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-19435) Reopen Files for ClosedChannelException in BucketCache
Date Wed, 06 Dec 2017 01:25:00 GMT

     [ https://issues.apache.org/jira/browse/HBASE-19435?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zach York updated HBASE-19435:
------------------------------
    Status: Patch Available  (was: Open)

> 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: 1.3.1, 2.0.0
>            Reporter: Zach York
>            Assignee: Zach York
>         Attachments: HBASE-19435.master.001.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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