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Posted to hdfs-issues@hadoop.apache.org by "Hudson (Jira)" <ji...@apache.org> on 2019/10/04 03:06:00 UTC
[jira] [Commented] (HDDS-2198) SCM should not consider containers
in CLOSING state to come out of safemode
[ https://issues.apache.org/jira/browse/HDDS-2198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16944183#comment-16944183 ]
Hudson commented on HDDS-2198:
------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #17461 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/17461/])
HDDS-2198. SCM should not consider containers in CLOSING state to come (github: rev cdaa480dbfd8cc0f0d358f17047c8aa97299cb35)
* (edit) hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/safemode/ContainerSafeModeRule.java
* (edit) hadoop-hdds/server-scm/src/test/java/org/apache/hadoop/hdds/scm/safemode/TestSCMSafeModeManager.java
> SCM should not consider containers in CLOSING state to come out of safemode
> ---------------------------------------------------------------------------
>
> Key: HDDS-2198
> URL: https://issues.apache.org/jira/browse/HDDS-2198
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: SCM
> Reporter: Nilotpal Nandi
> Assignee: Nanda kumar
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.5.0
>
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> There are cases where SCM can be stuck in safemode for ever if it considers containers in CLOSING state for coming out of safemode
> * If there are 5 containers in OPEN state inside SCM
> * Out of 5, 3 containers are created in datanodes by the client.
> * 2 containers are yet to be created in datanodes
> * Due to some pipeline issue, pipeline close action is sent.
> * All 5 container's state are changed from OPEN to CLOSING in SCM.
> * Eventually , 3 container's state moves from CLOSING to CLOSED in SCM as the datanodes closes those containers.
> * 2 of the containers are still in CLOSING state.
> * SCM is restarted.
> * SCM will never gets container reports for the containers which were in CLOSING state as those containers were never created in datanodes.
> * SCM will remain in safemode.
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