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