[DataXceiver for client at /127.0.0.1:41904 [Sending block BP-293397713-127.0.1.1-1591535936877:blk_-9223372036854775786_1001]] ERROR datanode.DataNode (DataXceiver.java:run(324)) - 127.0.0.1:34789:DataXceiver error processing READ_BLOCK operation src: /127.0.0.1:41904 dst: /127.0.0.1:34789[DataXceiver for client at /127.0.0.1:41904 [Sending block BP-293397713-127.0.1.1-1591535936877:blk_-9223372036854775786_1001]] ERROR datanode.DataNode (DataXceiver.java:run(324)) - 127.0.0.1:34789:DataXceiver error processing READ_BLOCK operation src: /127.0.0.1:41904 dst: /127.0.0.1:34789java.lang.NullPointerException
at org.apache.hadoop.hdfs.server.datanode.FileIoProvider.transferToSocketFully(FileIoProvider.java:283)
at org.apache.hadoop.hdfs.server.datanode.BlockSender.sendPacket(BlockSender.java:614)
at org.apache.hadoop.hdfs.server.datanode.BlockSender.doSendBlock(BlockSender.java:809)
at org.apache.hadoop.hdfs.server.datanode.BlockSender.sendBlock(BlockSender.java:756)
at org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXceiver.java:610)
at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opReadBlock(Receiver.java:152)
at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:104
at org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:292)
at java.lang.Thread.run(Thread.java:748)
Major