Xiaoyu Yao created HDFS-6836:
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Summary: HDFS INFO logging is verbose & uses file appenders
Key: HDFS-6836
URL: https://issues.apache.org/jira/browse/HDFS-6836
Project: Hadoop HDFS
Issue Type: Bug
Components: datanode
Reporter: Xiaoyu Yao
Priority: Critical
Reported by: Gopal Vijayaraghavan
The HDFS INFO logs is present within the inner loops of HDFS logging
information like
2014-07-24 19:43:34,459 INFO DataNode.clienttrace
(BlockSender.java:sendBlock(738)) - src: /172.21.128.105:50010, dest:
/172.21.128.113:43666, bytes: 786432, op: HDFS_READ, cliID:
DFSClient_hb_rs_cn113-10.l42scl.hortonworks.com,50700,1406227155474_1075922312_33,
offset: 86616576, srvID: 3f80f56f-a6ea-4951-8db6-86b51938d144, blockid:
BP-971413386-172.21.128.105-1398117368124:blk_1074925960_1186504, duration:
6827335
2014-07-24 19:43:34,465 INFO DataNode.clienttrace
(BlockSender.java:sendBlock(738)) - src: /172.21.128.105:50010, dest:
/172.21.128.117:41731, bytes: 786432, op: HDFS_READ, cliID:
DFSClient_hb_rs_cn117-10.l42scl.hortonworks.com,53868,1406227155459_1689003704_33,
offset: 72691200, srvID: 3f80f56f-a6ea-4951-8db6-86b51938d144, blockid:
BP-971413386-172.21.128.105-1398117368124:blk_1074926372_1186916, duration:
7178626
2014-07-24 19:43:34,467 INFO DataNode.clienttrace
(BlockSender.java:sendBlock(738)) - src: /172.21.128.105:50010, dest:
/172.21.128.113:43669, bytes: 786432, op: HDFS_READ, cliID:
DFSClient_hb_rs_cn113-10.l42scl.hortonworks.com,50700,1406227155474_1075922312_33,
offset: 86813696, srvID: 3f80f56f-a6ea-4951-8db6-86b51938d144, blockid:
BP-971413386-172.21.128.105-1398117368124:blk_1074925960_1186504, duration:
8540703
2014-07-24 19:43:34,474 INFO DataNode.clienttrace
(BlockSender.java:sendBlock(738)) - src: /172.21.128.105:50010, dest:
/172.21.128.117:41733, bytes: 786432, op: HDFS_READ, cliID:
DFSClient_hb_rs_cn117-10.l42scl.hortonworks.com,53868,1406227155459_1689003704_33,
offset: 72822272, srvID: 3f80f56f-a6ea-4951-8db6-86b51938d144, blockid:
BP-971413386-172.21.128.105-1398117368124:blk_1074926372_1186916, duration:
8220422
2014-07-24 19:43:34,477 INFO DataNode.clienttrace
(BlockSender.java:sendBlock(738)) - src: /172.21.128.105:50010, dest:
/172.21.128.113:43672, bytes: 786432, op: HDFS_READ, cliID:
DFSClient_hb_rs_cn113-10.l42scl.hortonworks.com,50700,1406227155474_1075922312_33,
offset: 86944768, srvID: 3f80f56f-a6ea-4951-8db6-86b51938d144, blockid:
BP-971413386-172.21.128.105-1398117368124:blk_1074925960_1186504, duration:
8327499
Looks like future releases of log4j will fix this to be faster
-https://issues.apache.org/jira/browse/LOG4J2-163
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