Details
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Improvement
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Status: Open
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Minor
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Resolution: Unresolved
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None
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None
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None
Description
If the Datanode is set to log at info, then the log fills up with lots of details about packet sending and receiving
[sf-startdaemon-debug] 09/01/28 13:15:42 [org.apache.hadoop.hdfs.server.datanode.DataXceiver@83efe6e] INFO datanode.DataNode : Receiving block blk_-3185775405544105186_1757 src: /127.0.0.1:41218 dest: /127.0.0.1:48017
[sf-startdaemon-debug] 09/01/28 13:15:42 [PacketResponder 0 for Block blk_-3185775405544105186_1757] INFO datanode.DataNode : Received block blk_-3185775405544105186_1757 of size 3647 from /127.0.0.1:41218
[sf-startdaemon-debug] 09/01/28 13:15:42 [PacketResponder 0 for Block blk_-3185775405544105186_1757] INFO datanode.DataNode : PacketResponder 0 for block blk_-3185775405544105186_1757 terminating
[sf-startdaemon-debug] 09/01/28 13:15:42 [org.apache.hadoop.hdfs.server.datanode.DataXceiver@83f0029] INFO datanode.DataNode : Receiving block blk_-1511363731410268168_1758 src: /127.0.0.1:41219 dest: /127.0.0.1:48017
[sf-startdaemon-debug] 09/01/28 13:15:42 [PacketResponder 0 for Block blk_-1511363731410268168_1758] INFO datanode.DataNode : Received block blk_-1511363731410268168_1758 of size 940 from /127.0.0.1:41219
[sf-startdaemon-debug] 09/01/28 13:15:42 [PacketResponder 0 for Block blk_-1511363731410268168_1758] INFO datanode.DataNode : PacketResponder 0 for block blk_-1511363731410268168_1758 terminating
[sf-startdaemon-debug] 09/01/28 13:15:42 [org.apache.hadoop.hdfs.server.datanode.DataXceiver@83f01e4] INFO datanode.DataNode : Receiving block blk_-967265843864311176_1759 src: /127.0.0.1:41220 dest: /127.0.0.1:48017
[sf-startdaemon-debug] 09/01/28 13:15:42 [PacketResponder 0 for Block blk_-967265843864311176_1759] INFO datanode.DataNode : Received block blk_-967265843864311176_1759 of size 36948 from /127.0.0.1:41220
It would be convenient for those people who only want to see errors in communication but monitor other DataNode operations to have a separate logger for DataNode communications; one to view at a separate log level.