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via apache.org by Unknown author, 1 year ago
This exception has no message.
via apache.org by Unknown author, 1 year ago
This exception has no message.
java.lang.NullPointerException at org.apache.hadoop.hdfs.server.namenode.BlockPlacementPolicy.getInstance(BlockPlacementPolicy.java:165) at org.apache.hadoop.hdfs.server.balancer.Balancer.checkReplicationPolicyCompatibility(Balancer.java:799)