java.io.IOException: Error in deleting blocks.
at org.apache.hadoop.hdfs.server.datanode.FSDataset.invalidate(FSDataset.java:1967)
at org.apache.hadoop.hdfs.server.datanode.DataNode.processCommand(DataNode.java:1181)
at org.apache.hadoop.hdfs.server.datanode.DataNode.processCommand(DataNode.java:1143)
at org.apache.hadoop.hdfs.server.datanode.DataNode.offerService(DataNode.java:980)
at org.apache.hadoop.hdfs.server.datanode.DataNode.run(DataNode.java:1527)
at java.lang.Thread.run(Thread.java:724)