Details
-
Bug
-
Status: Closed
-
Major
-
Resolution: Fixed
-
0.21.0
-
None
-
None
-
Reviewed
Description
When trying to run the balancer, I get a NullPointerException:
2009-11-10 11:08:14,235 ERROR org.apache.hadoop.hdfs.server.balancer.Balancer: java.lang.NullPointerException
at org.apache.hadoop.hdfs.server.namenode.BlockPlacementPolicy.getInstance(BlockPlacementPolicy.java:161)
at org.apache.hadoop.hdfs.server.balancer.Balancer.checkReplicationPolicyCompatibility(Balancer.java:784)
at org.apache.hadoop.hdfs.server.balancer.Balancer.<init>(Balancer.java:792)
at org.apache.hadoop.hdfs.server.balancer.Balancer.main(Balancer.java:814)
This happens when trying to use bin/start-balancer or bin/hdfs balancer -threshold 10
The config files (hdfs-site and core-site) have as fs.default.name hdfs://namenode:9000.