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  1. Hadoop HDFS
  2. HDFS-6836

HDFS INFO logging is verbose & uses file appenders

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.4.1
    • Fix Version/s: 2.6.0
    • Component/s: datanode
    • Labels:
      None
    • Target Version/s:
    • Hadoop Flags:
      Reviewed

      Description

      Reported by: Gopal V.

      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

        Attachments

        1. HDFS-6836.0.patch
          0.8 kB
          Xiaoyu Yao
        2. HDFS-6836.1.patch
          0.9 kB
          Xiaoyu Yao
        3. HDFS-6836.2.patch
          1 kB
          Xiaoyu Yao

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              • Assignee:
                xiaoyuyao Nathan Yao
                Reporter:
                gopalv Gopal V
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                Dates

                • Created:
                  Updated:
                  Resolved: