hadoop-hdfs-dev 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:
{noformat}
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)
{noformat}

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

Mime
View raw message