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 <rang...@yahoo-inc.com> To: core-user@hadoop.apache.org 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 >
