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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18212) In Standalone mode with local filesystem HBase logs Warning message:Failed to invoke 'unbuffer' method in class class org.apache.hadoop.fs.FSDataInputStream
Date Thu, 15 Jun 2017 22:25:01 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18212?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16051163#comment-16051163
] 

Andrew Purtell commented on HBASE-18212:
----------------------------------------

I don't think we need to over-think it. Fine to go to TRACE IMHO

> In Standalone mode with local filesystem HBase logs Warning message:Failed to invoke
'unbuffer' method in class class org.apache.hadoop.fs.FSDataInputStream
> ------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-18212
>                 URL: https://issues.apache.org/jira/browse/HBASE-18212
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 2.0.0
>            Reporter: Umesh Agashe
>
> New users may get nervous after seeing following warning level log messages (considering
new users will most likely run HBase in Standalone mode first):
> {code}
> WARN  [MemStoreFlusher.1] io.FSDataInputStreamWrapper: Failed to invoke 'unbuffer' method
in class class org.apache.hadoop.fs.FSDataInputStream . So there may be a TCP socket connection
left open in CLOSE_WAIT state.
> {code}



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