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https://issues.apache.org/jira/browse/HDFS-17845?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18047533#comment-18047533
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Ayush Saxena commented on HDFS-17845:
-------------------------------------
Not sure, how it helps or what is the ask here. The exception is thrown to the
client that {{addBlock}} failed Due to {{QuotaExceededException}}, so that
should help conclude the root cause, or is the ask just like don't log it is
debug but info or warn kind of thing?
> DataStreamer QuotaExceededException should be thrown to Client
> --------------------------------------------------------------
>
> Key: HDFS-17845
> URL: https://issues.apache.org/jira/browse/HDFS-17845
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs-client
> Reporter: Karthik Palanisamy
> Priority: Major
>
> When a {{QuotaExceededException}} happens during {{{}addBlock{}}}, nameNode
> throws back to client but {{DataStreamer}} client logs this as {{DEBUG}}
> instead of {{WARN.}}
> {{[https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DataStreamer.java#L857]}}
> Hard to troubleshoot them.
> Also, for any DataStreamer exception, we set it in lastException.set(e) and
> close the stream afterward. This lastException thrown in all the scenarios
> (when the stream is created with right datanode list). If any error during
> stream then it retries and send back to client. But in case of
> QuotaExceededException, the namenode didn’t return any datanode list, so the
> output stream was never created and also we missed throwing the exception to
> the client.
>
> [https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DataStreamer.java#L862]
> [https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DataStreamer.java#L876]
>
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