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Posted to issues@impala.apache.org by "Joe McDonnell (JIRA)" <ji...@apache.org> on 2018/02/12 19:58:00 UTC

[jira] [Resolved] (IMPALA-5909) File handle cache causes HDFS to log excessive errors when trying to unbuffer files

     [ https://issues.apache.org/jira/browse/IMPALA-5909?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joe McDonnell resolved IMPALA-5909.
-----------------------------------
    Resolution: Fixed

> File handle cache causes HDFS to log excessive errors when trying to unbuffer files
> -----------------------------------------------------------------------------------
>
>                 Key: IMPALA-5909
>                 URL: https://issues.apache.org/jira/browse/IMPALA-5909
>             Project: IMPALA
>          Issue Type: Bug
>          Components: Backend
>    Affects Versions: Impala 2.10.0
>            Reporter: Tim Armstrong
>            Assignee: Joe McDonnell
>            Priority: Major
>              Labels: usability
>
> On a few different clusters I've seen a lot of errors like this in the logs:
> {code}
> org/apache/hadoop/fs/FSDataInputStream#unbuffer failed: error:
> UnsupportedOperationException: this stream does not support unbuffering.java.lang.UnsupportedOperationException: this stream does not support unbuffering.
>         at org.apache.hadoop.fs.FSDataInputStream.unbuffer(FSDataInputStream.java:233)
> {code}
> It doesn't seem harmful but adds a lot of noise to the logs for a non-error condition.



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