hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-4161) HDFS keeps a thread open for every file writer
Date Wed, 07 Nov 2012 22:16:12 GMT
Suresh Srinivas created HDFS-4161:

             Summary: HDFS keeps a thread open for every file writer
                 Key: HDFS-4161
                 URL: https://issues.apache.org/jira/browse/HDFS-4161
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: hdfs client
    Affects Versions: 1.0.0
            Reporter: Suresh Srinivas

In 1.0 release DFSClient uses a thread per file writer. In some use cases (dynamic partions
in hive) that use a large number of file writers a large number of threads are created. The
file writer thread has the following stack:
at java.lang.Thread.sleep(Native Method)
at org.apache.hadoop.hdfs.DFSClient$LeaseChecker.run(DFSClient.java:1462)
at java.lang.Thread.run(Thread.java:662)

This problem has been fixed in later releases. This jira will post a consolidated patch from
various jiras that addresses the issue.

This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

View raw message