You are viewing a plain text version of this content. The canonical link for it is here.

Posted to common-user@hadoop.apache.org by Stas Oskin <st...@gmail.com> on 2009/05/14 01:24:32 UTC

Balancer error moving block messages

Hi.

When running balancer, I get some "WARN dfs.Balancer: Error moving block"
exceptions:

09/05/14 02:23:52 WARN dfs.Balancer: Error moving block 2821744845236432325
from 192.168.253.41:50010 to 192.168.253.20:50010 through
192.168.253.41:50010: Moving block 2821744845236432325 from
192.168.253.41:50010 to 192.168.253.20:50010 through 192.168.253.41:50010
failed
java.io.IOException: Moving block 2821744845236432325 from
192.168.253.41:50010 to 192.168.253.20:50010 through 192.168.253.41:50010
failed
        at
org.apache.hadoop.dfs.Balancer$PendingBlockMove.receiveResponse(Balancer.java:366)
        at
org.apache.hadoop.dfs.Balancer$PendingBlockMove.dispatch(Balancer.java:316)
        at
org.apache.hadoop.dfs.Balancer$PendingBlockMove.access$1700(Balancer.java:224)
        at
org.apache.hadoop.dfs.Balancer$PendingBlockMove$1.run(Balancer.java:388)
        at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:619)


FSCK reports that volume is health and doesn't show any errors.

Any idea why it happens?

Regards.