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Posted to issues@hbase.apache.org by "Enis Soztutar (JIRA)" <ji...@apache.org> on 2013/06/29 03:24:20 UTC

[jira] [Created] (HBASE-8838) [WINDOWS] FileLink assumptions are broken under NTFS

Enis Soztutar created HBASE-8838:
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             Summary: [WINDOWS] FileLink assumptions are broken under NTFS
                 Key: HBASE-8838
                 URL: https://issues.apache.org/jira/browse/HBASE-8838
             Project: HBase
          Issue Type: Sub-task
            Reporter: Enis Soztutar
            Assignee: Enis Soztutar


FileLink assumes that underlying files can be moved while there are open readers. Windows does not allow the file which has active readers to be moved unless the file is opened in shared mode. JDK6 and 7 open the file in exclusive mode by default, so moving the file while there are readers is not possible. 

Hadoop-on-windows copies the file, if it cannot perform the rename. This will cause duplication, and the original file not being deleted. 

This affects the unit test TestFileLink. On local mode over NTFS, reading from snapshot files and replication might cause issues, but I don't think it has any other implications on hbase+hdfs on windows.







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