FAQ
TaskTrackers fail to connect back upon a re-init action
-------------------------------------------------------

Key: HADOOP-3947
URL: https://issues.apache.org/jira/browse/HADOOP-3947
Project: Hadoop Core
Issue Type: Bug
Components: mapred
Affects Versions: 0.18.0
Reporter: Amar Kamat
Priority: Blocker


It seems that if the {{JobTracker}} asks the {{TaskTracker}} to re-initialize itself, the {{TaskTracker}} never connects back to the {{Jobtracker}}.

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  • Amar Kamat (JIRA) at Aug 13, 2008 at 3:41 pm
    [ https://issues.apache.org/jira/browse/HADOOP-3947?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

    Amar Kamat updated HADOOP-3947:
    -------------------------------

    Attachment: HADOOP-3947-v1.patch

    Attaching a patch that solves the issue.
    TaskTrackers fail to connect back upon a re-init action
    -------------------------------------------------------

    Key: HADOOP-3947
    URL: https://issues.apache.org/jira/browse/HADOOP-3947
    Project: Hadoop Core
    Issue Type: Bug
    Components: mapred
    Affects Versions: 0.18.0
    Reporter: Amar Kamat
    Priority: Blocker
    Attachments: HADOOP-3947-v1.patch


    It seems that if the {{JobTracker}} asks the {{TaskTracker}} to re-initialize itself, the {{TaskTracker}} never connects back to the {{Jobtracker}}.
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  • Amareshwari Sriramadasu (JIRA) at Aug 14, 2008 at 4:52 am
    [ https://issues.apache.org/jira/browse/HADOOP-3947?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

    Amareshwari Sriramadasu reassigned HADOOP-3947:
    -----------------------------------------------

    Assignee: Amareshwari Sriramadasu
    TaskTrackers fail to connect back upon a re-init action
    -------------------------------------------------------

    Key: HADOOP-3947
    URL: https://issues.apache.org/jira/browse/HADOOP-3947
    Project: Hadoop Core
    Issue Type: Bug
    Components: mapred
    Affects Versions: 0.18.0
    Reporter: Amar Kamat
    Assignee: Amareshwari Sriramadasu
    Priority: Blocker
    Attachments: HADOOP-3947-v1.patch


    It seems that if the {{JobTracker}} asks the {{TaskTracker}} to re-initialize itself, the {{TaskTracker}} never connects back to the {{Jobtracker}}.
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  • Amareshwari Sriramadasu (JIRA) at Aug 14, 2008 at 5:00 am
    [ https://issues.apache.org/jira/browse/HADOOP-3947?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

    Amareshwari Sriramadasu updated HADOOP-3947:
    --------------------------------------------

    Assignee: Amar Kamat (was: Amareshwari Sriramadasu)
    Hadoop Flags: [Reviewed]

    +1 patch looks good.
    TaskTrackers fail to connect back upon a re-init action
    -------------------------------------------------------

    Key: HADOOP-3947
    URL: https://issues.apache.org/jira/browse/HADOOP-3947
    Project: Hadoop Core
    Issue Type: Bug
    Components: mapred
    Affects Versions: 0.18.0
    Reporter: Amar Kamat
    Assignee: Amar Kamat
    Priority: Blocker
    Attachments: HADOOP-3947-v1.patch


    It seems that if the {{JobTracker}} asks the {{TaskTracker}} to re-initialize itself, the {{TaskTracker}} never connects back to the {{Jobtracker}}.
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  • Amareshwari Sriramadasu (JIRA) at Aug 14, 2008 at 5:02 am
    [ https://issues.apache.org/jira/browse/HADOOP-3947?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

    Amareshwari Sriramadasu updated HADOOP-3947:
    --------------------------------------------

    Assignee: Amareshwari Sriramadasu (was: Amar Kamat)
    Hadoop Flags: (was: [Reviewed])

    Sorry. setting of running = true should be removed from run method.
    TaskTrackers fail to connect back upon a re-init action
    -------------------------------------------------------

    Key: HADOOP-3947
    URL: https://issues.apache.org/jira/browse/HADOOP-3947
    Project: Hadoop Core
    Issue Type: Bug
    Components: mapred
    Affects Versions: 0.18.0
    Reporter: Amar Kamat
    Assignee: Amareshwari Sriramadasu
    Priority: Blocker
    Attachments: HADOOP-3947-v1.patch


    It seems that if the {{JobTracker}} asks the {{TaskTracker}} to re-initialize itself, the {{TaskTracker}} never connects back to the {{Jobtracker}}.
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  • Amareshwari Sriramadasu (JIRA) at Aug 14, 2008 at 5:54 am
    [ https://issues.apache.org/jira/browse/HADOOP-3947?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

    Amareshwari Sriramadasu updated HADOOP-3947:
    --------------------------------------------

    Attachment: patch-3947.txt

    Here is patch moving this.running=true to _initialize_ from _run_ method. The patch is tested.
    TaskTrackers fail to connect back upon a re-init action
    -------------------------------------------------------

    Key: HADOOP-3947
    URL: https://issues.apache.org/jira/browse/HADOOP-3947
    Project: Hadoop Core
    Issue Type: Bug
    Components: mapred
    Affects Versions: 0.18.0
    Reporter: Amar Kamat
    Assignee: Amareshwari Sriramadasu
    Priority: Blocker
    Attachments: HADOOP-3947-v1.patch, patch-3947.txt


    It seems that if the {{JobTracker}} asks the {{TaskTracker}} to re-initialize itself, the {{TaskTracker}} never connects back to the {{Jobtracker}}.
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  • Amareshwari Sriramadasu (JIRA) at Aug 14, 2008 at 5:56 am
    [ https://issues.apache.org/jira/browse/HADOOP-3947?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

    Amareshwari Sriramadasu updated HADOOP-3947:
    --------------------------------------------

    Status: Patch Available (was: Open)
    TaskTrackers fail to connect back upon a re-init action
    -------------------------------------------------------

    Key: HADOOP-3947
    URL: https://issues.apache.org/jira/browse/HADOOP-3947
    Project: Hadoop Core
    Issue Type: Bug
    Components: mapred
    Affects Versions: 0.18.0
    Reporter: Amar Kamat
    Assignee: Amareshwari Sriramadasu
    Priority: Blocker
    Attachments: HADOOP-3947-v1.patch, patch-3947.txt


    It seems that if the {{JobTracker}} asks the {{TaskTracker}} to re-initialize itself, the {{TaskTracker}} never connects back to the {{Jobtracker}}.
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  • Amareshwari Sriramadasu (JIRA) at Aug 14, 2008 at 11:48 am
    [ https://issues.apache.org/jira/browse/HADOOP-3947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12622526#action_12622526 ]

    Amareshwari Sriramadasu commented on HADOOP-3947:
    -------------------------------------------------

    test-patch result on trunk :
    {code}
    [exec] -1 overall.
    [exec]
    [exec] +1 @author. The patch does not contain any @author tags.
    [exec]
    [exec] -1 tests included. The patch doesn't appear to include any new or modified tests.
    [exec] Please justify why no tests are needed for this patch.
    [exec]
    [exec] -1 javadoc. The javadoc tool appears to have generated 1 warning messages.
    [exec]
    [exec] +1 javac. The applied patch does not increase the total number of javac compiler warnings.
    [exec]
    [exec] +1 findbugs. The patch does not introduce any new Findbugs warnings.
    [exec]
    [exec]
    {code}

    -1 javadoc is known issue. HADOOP-3949

    It's difficult to write testcase for this.
    TaskTrackers fail to connect back upon a re-init action
    -------------------------------------------------------

    Key: HADOOP-3947
    URL: https://issues.apache.org/jira/browse/HADOOP-3947
    Project: Hadoop Core
    Issue Type: Bug
    Components: mapred
    Affects Versions: 0.18.0
    Reporter: Amar Kamat
    Assignee: Amareshwari Sriramadasu
    Priority: Blocker
    Attachments: HADOOP-3947-v1.patch, patch-3947.txt


    It seems that if the {{JobTracker}} asks the {{TaskTracker}} to re-initialize itself, the {{TaskTracker}} never connects back to the {{Jobtracker}}.
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  • Devaraj Das (JIRA) at Aug 14, 2008 at 1:00 pm
    [ https://issues.apache.org/jira/browse/HADOOP-3947?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

    Devaraj Das updated HADOOP-3947:
    --------------------------------

    Resolution: Fixed
    Fix Version/s: 0.18.0
    Hadoop Flags: [Reviewed]
    Status: Resolved (was: Patch Available)

    +1; also tested manually.
    I committed this. Thanks, Amareshwari!
    TaskTrackers fail to connect back upon a re-init action
    -------------------------------------------------------

    Key: HADOOP-3947
    URL: https://issues.apache.org/jira/browse/HADOOP-3947
    Project: Hadoop Core
    Issue Type: Bug
    Components: mapred
    Affects Versions: 0.18.0
    Reporter: Amar Kamat
    Assignee: Amareshwari Sriramadasu
    Priority: Blocker
    Fix For: 0.18.0

    Attachments: HADOOP-3947-v1.patch, patch-3947.txt


    It seems that if the {{JobTracker}} asks the {{TaskTracker}} to re-initialize itself, the {{TaskTracker}} never connects back to the {{Jobtracker}}.
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  • Hudson (JIRA) at Aug 22, 2008 at 12:38 pm
    [ https://issues.apache.org/jira/browse/HADOOP-3947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12624722#action_12624722 ]

    Hudson commented on HADOOP-3947:
    --------------------------------

    Integrated in Hadoop-trunk #581 (See [http://hudson.zones.apache.org/hudson/job/Hadoop-trunk/581/])
    TaskTrackers fail to connect back upon a re-init action
    -------------------------------------------------------

    Key: HADOOP-3947
    URL: https://issues.apache.org/jira/browse/HADOOP-3947
    Project: Hadoop Core
    Issue Type: Bug
    Components: mapred
    Affects Versions: 0.18.0
    Reporter: Amar Kamat
    Assignee: Amareshwari Sriramadasu
    Priority: Blocker
    Fix For: 0.18.0

    Attachments: HADOOP-3947-v1.patch, patch-3947.txt


    It seems that if the {{JobTracker}} asks the {{TaskTracker}} to re-initialize itself, the {{TaskTracker}} never connects back to the {{Jobtracker}}.
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postedAug 13, '08 at 3:37p
activeAug 22, '08 at 12:38p
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