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Hadoop, mail # user - Socket closed Exception


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Re: Socket closed Exception
lohit 2009-03-30, 19:26

Thanks Raghu, is the log level at DEBUG? I do not see any socket close exception at NameNode at WARN/INFO level.
Lohit

----- Original Message ----
From: Raghu Angadi <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Sent: Monday, March 30, 2009 12:08:19 PM
Subject: Re: Socket closed Exception
If it is NameNode, then there is probably a log about closing the socket around that time.

Raghu.

lohit wrote:
> Recently we are seeing lot of Socket closed exception in our cluster. Many task's open/create/getFileInfo calls get back 'SocketException' with message 'Socket closed'. We seem to see many tasks fail with same error around same time. There are no warning or info messages in NameNode /TaskTracker/Task logs. (This is on HDFS 0.15) Are there cases where NameNode closes socket due heavy load or during conention of resource of anykind?
>
> Thanks,
> Lohit
>