Grokbase Groups HBase dev August 2009
FAQ
master log recovery hole, master can crash and trash the logs
-------------------------------------------------------------

Key: HBASE-1802
URL: https://issues.apache.org/jira/browse/HBASE-1802
Project: Hadoop HBase
Issue Type: Bug
Affects Versions: 0.20.0
Reporter: ryan rawson
Fix For: 0.20.1, 0.21.0


During recovery, the master had opened all the logfiles, but when it went to open the destination files, it crashed. The logfile is missing, the edits did not get applied.

looks like there is a hole whereby we delete the original logfiles before we confirm the new output logs were written. oops!

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  • ryan rawson (JIRA) at Sep 10, 2009 at 11:36 pm
    [ https://issues.apache.org/jira/browse/HBASE-1802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12753896#action_12753896 ]

    ryan rawson commented on HBASE-1802:
    ------------------------------------

    code looks ok, not sure what happened, pretty sure i lost my logs after the hmaster died, but maybe i misread. need to repro.
    master log recovery hole, master can crash and trash the logs
    -------------------------------------------------------------

    Key: HBASE-1802
    URL: https://issues.apache.org/jira/browse/HBASE-1802
    Project: Hadoop HBase
    Issue Type: Bug
    Affects Versions: 0.20.0
    Reporter: ryan rawson
    Fix For: 0.20.1, 0.21.0


    During recovery, the master had opened all the logfiles, but when it went to open the destination files, it crashed. The logfile is missing, the edits did not get applied.
    looks like there is a hole whereby we delete the original logfiles before we confirm the new output logs were written. oops!
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  • stack (JIRA) at Sep 11, 2009 at 9:03 pm
    [ https://issues.apache.org/jira/browse/HBASE-1802?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

    stack updated HBASE-1802:
    -------------------------

    Fix Version/s: (was: 0.21.0)
    (was: 0.20.1)

    Moving out of 0.20.1 till we prove we have this condition for sure.
    master log recovery hole, master can crash and trash the logs
    -------------------------------------------------------------

    Key: HBASE-1802
    URL: https://issues.apache.org/jira/browse/HBASE-1802
    Project: Hadoop HBase
    Issue Type: Bug
    Affects Versions: 0.20.0
    Reporter: ryan rawson

    During recovery, the master had opened all the logfiles, but when it went to open the destination files, it crashed. The logfile is missing, the edits did not get applied.
    looks like there is a hole whereby we delete the original logfiles before we confirm the new output logs were written. oops!
    --
    This message is automatically generated by JIRA.
    -
    You can reply to this email to add a comment to the issue online.

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groupdev @
categorieshbase, hadoop
postedAug 28, '09 at 12:59a
activeSep 11, '09 at 9:03p
posts3
users1
websitehbase.apache.org

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stack (JIRA): 3 posts

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