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Posted to common-user@hadoop.apache.org by Rasit OZDAS <ra...@gmail.com> on 2009/03/23 14:25:30 UTC

Running Balancer from API

Hi,

I try to start balancer from API
(org.apache.hadoop.hdfs.server.balancer.Balancer.main() ), but I get
NullPointerException.

09/03/23 15:17:37 ERROR dfs.Balancer: java.lang.NullPointerException
    at org.apache.hadoop.dfs.Balancer.run(Balancer.java:1453)
    at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
    at org.apache.hadoop.dfs.Balancer.main(Balancer.java:792)

It's this line (Balancer.java:1453):
    fs.delete(BALANCER_ID_PATH, true);

The process doesn't start at all, I assume, It tries to delete a path that
balancer didn't put yet.
Is this an issue?

Rasit