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From "hu xiaodong (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-12963) error log level in ShortCircuitRegistry#removeShm
Date Mon, 25 Dec 2017 08:13:01 GMT

     [ https://issues.apache.org/jira/browse/HDFS-12963?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

hu xiaodong updated HDFS-12963:
-------------------------------
    Target Version/s: 3.0.0-alpha4

> error log level in ShortCircuitRegistry#removeShm
> -------------------------------------------------
>
>                 Key: HDFS-12963
>                 URL: https://issues.apache.org/jira/browse/HDFS-12963
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: hu xiaodong
>            Assignee: hu xiaodong
>            Priority: Minor
>         Attachments: HDFS-12963.001.patch
>
>
> {code:title=org.apache.hadoop.hdfs.server.datanode.ShortCircuitRegistry.java|borderStyle=solid}
>   public synchronized void removeShm(ShortCircuitShm shm) {
>     if (LOG.isTraceEnabled()) {
>         LOG.debug("removing shm " + shm);   ------------------ I think here should be
trace
>     }
>     // Stop tracking the shmId.
>     RegisteredShm removedShm = segments.remove(shm.getShmId());
>     Preconditions.checkState(removedShm == shm,
>         "failed to remove " + shm.getShmId());
>     // Stop tracking the slots.
>     for (Iterator<Slot> iter = shm.slotIterator(); iter.hasNext(); ) {
>       Slot slot = iter.next();
>       boolean removed = slots.remove(slot.getBlockId(), slot);
>       Preconditions.checkState(removed);
>       slot.makeInvalid();
>     }
>     // De-allocate the memory map and close the shared file. 
>     shm.free();
>   }
> {code}



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