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https://issues.apache.org/jira/browse/HDFS-6836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14095513#comment-14095513
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Hudson commented on HDFS-6836:
------------------------------
FAILURE: Integrated in Hadoop-Hdfs-trunk #1836 (See
[https://builds.apache.org/job/Hadoop-Hdfs-trunk/1836/])
HDFS-6836. HDFS INFO logging is verbose & uses file appenders. (Contributed by
Xiaoyu Yao) (arp:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1617603)
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockSender.java
> 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: Improvement
> Components: datanode
> Affects Versions: 2.4.1
> Reporter: Gopal V
> Assignee: Xiaoyu Yao
> Fix For: 3.0.0, 2.6.0
>
> Attachments: HDFS-6836.0.patch, HDFS-6836.1.patch, HDFS-6836.2.patch
>
>
> Reported by: [~gopalv].
> The HDFS INFO logs is present within the inner loops of HDFS logging
> information like
> {code}
> 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
> {code}
> Looks like future releases of log4j will fix this to be faster -
> https://issues.apache.org/jira/browse/LOG4J2-163
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