Akira AJISAKA created HDFS-7708:
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Summary: Balancer should delete its pid file when it completes
rebalance
Key: HDFS-7708
URL: https://issues.apache.org/jira/browse/HDFS-7708
Project: Hadoop HDFS
Issue Type: Bug
Components: balancer & mover
Affects Versions: 2.6.0
Reporter: Akira AJISAKA
When balancer completes rebalance and exits, it does not delete its pid file.
Starting balancer again, then "kill -0 pid" to confirm the process is running.
The problem is:
* If another process is running as the same pid as `cat pidfile`, balancer
fails to start with following message:
{code}
balancer is running as process 3443. Stop it first.
{code}
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