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Posted to common-issues@hadoop.apache.org by "Sreekanth Ramakrishnan (JIRA)" <ji...@apache.org> on 2009/09/10 11:13:57 UTC
[jira] Created: (HADOOP-6249) Incorrect synchronization in
DistributedCache causes TaskTrackers to freeze up during localization of
Cache for tasks.
Incorrect synchronization in DistributedCache causes TaskTrackers to freeze up during localization of Cache for tasks.
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Key: HADOOP-6249
URL: https://issues.apache.org/jira/browse/HADOOP-6249
Project: Hadoop Common
Issue Type: Bug
Components: filecache
Affects Versions: 0.20.0
Reporter: Sreekanth Ramakrishnan
Currently {{org.apache.hadoop.filecache.DistributedCache.getLocalCache(URI, Configuration, Path, FileStatus, boolean, long, Path, boolean)}} allows only one {{TaskRunner}} thread in TT to localize {{DistributedCache}} across jobs. Current way of synchronization is across baseDir this has to be changed to lock on the same baseDir.
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