hbase-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Cosmin Lehene (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-2645) HLog writer can do 1-2 sync operations after lease has been recovered for split process.
Date Tue, 01 Jun 2010 17:57:38 GMT
HLog writer can do 1-2 sync operations after lease has been recovered for split process.
----------------------------------------------------------------------------------------

                 Key: HBASE-2645
                 URL: https://issues.apache.org/jira/browse/HBASE-2645
             Project: HBase
          Issue Type: Bug
          Components: io
    Affects Versions: 0.21.0
            Reporter: Cosmin Lehene
             Fix For: 0.21.0


TestHLogSplit.testLogCannotBeWrittenOnceParsed is failing. 

This test starts a thread that writes one edit to the log, syncs and counts. During this,
a HLog.splitLog operation is started. splitLog recovers the log lease before reading the log,
so that the original regionserver could not wake up and write after the split process started.
 
The test compares the number of edits reported by the split process and by the writer thread.
Writer thread (called zombie in the test) should report <=  than the splitLog (sync() might
raise after the last edit gets written and the edit won't get counted by zombie thread). However
it appears that the zombie counts 1-2 more edits. So it looks like it can sync without a lease.

This might be a hdfs-0.20 related issue. 

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message