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From "dhruba borthakur (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAPREDUCE-1706) Log RAID recoveries on HDFS
Date Wed, 17 Nov 2010 06:26:14 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-1706?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

dhruba borthakur updated MAPREDUCE-1706:
----------------------------------------

    Status: Open  (was: Patch Available)

Compilation errors

{code}

    [javac] /mnt/vol/devrs004.snc1/dhruba/commitmap/src/contrib/raid/src/test/org/apache/hadoop/hdfs/TestRaidDfs.java:469:
cannot find symbol
    [javac] symbol  : class BufferedReader
    [javac] location: class org.apache.hadoop.hdfs.TestRaidDfs
    [javac]       BufferedReader reader = new BufferedReader(new InputStreamReader(stm));
    [javac]       ^
    [javac] /mnt/vol/devrs004.snc1/dhruba/commitmap/src/contrib/raid/src/test/org/apache/hadoop/hdfs/TestRaidDfs.java:469:
cannot find symbol
    [javac] symbol  : class BufferedReader
    [javac] location: class org.apache.hadoop.hdfs.TestRaidDfs
    [javac]       BufferedReader reader = new BufferedReader(new InputStreamReader(stm));
    [javac]                                   ^
    [javac] /mnt/vol/devrs004.snc1/dhruba/commitmap/src/contrib/raid/src/test/org/apache/hadoop/hdfs/TestRaidDfs.java:469:
cannot find symbol
    [javac] symbol  : class InputStreamReader
    [javac] location: class org.apache.hadoop.hdfs.TestRaidDfs
    [javac]       BufferedReader reader = new BufferedReader(new InputStreamReader(stm));
    [javac]                                                      ^
    [javac] /mnt/vol/devrs004.snc1/dhruba/commitmap/src/contrib/raid/src/test/org/apache/hadoop/hdfs/TestRaidDfs.java:473:
cannot find symbol
    [javac] symbol  : variable Pattern
    [javac] location: class org.apache.hadoop.hdfs.TestRaidDfs
    [javac]       assertTrue(Pattern.matches("Alternate path : .*/destraid",

{code}


> Log RAID recoveries on HDFS
> ---------------------------
>
>                 Key: MAPREDUCE-1706
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1706
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: contrib/raid
>    Affects Versions: 0.22.0
>            Reporter: Rodrigo Schmidt
>            Assignee: Scott Chen
>             Fix For: 0.22.0
>
>         Attachments: MAPREDUCE-1706.rebase.txt, MAPREDUCE-1706.txt, test.result
>
>
> It would be good to have a way to centralize all the recovery logs, since recovery can
be executed by any hdfs client. The best place to store this information is HDFS itself.

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