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https://issues.apache.org/jira/browse/HADOOP-3239?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12588111#action_12588111
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Konstantin Shvachko commented on HADOOP-3239:
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> should go in 0.17?
Formally, it is not a regression in terms of performance or functionality.
Informally, it is an annoying message, and we will have to answer questions
until people will get used to it.
I'd schedule it for 0.17.
> exists() calls logs FileNotFoundException in namenode log
> ---------------------------------------------------------
>
> Key: HADOOP-3239
> URL: https://issues.apache.org/jira/browse/HADOOP-3239
> Project: Hadoop Core
> Issue Type: Bug
> Affects Versions: 0.17.0
> Reporter: lohit vijayarenu
>
> exists() was modified to invoke getFileStatus() internally. But
> getFileStatus() throws FileNotFoundException for files which does not exists
> and this is logged in RPC$Server for each exists() call. One way to get rid
> of these messages is at the Name Node, catch FileNotFoundException and return
> null. In this case, RPC would not log it in namenode log. But at the client
> end we might have to check for null on all calls of getFileStatus(). Other
> option at client end is to construct FileNotFoundException() when
> getFileInfo() returns null.
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