BlockReportProcessingThread exit doesn't print the actual stack

BlockReportProcessingThread thread may gets exited with multiple reasons, but the current logging prints only the exception message with different stack which is difficult to debug the issue.

Existing logging:

2021-07-20 10:20:23,104 [Block report processor] INFO  util.ExitUtil (ExitUtil.java:terminate(210)) - Exiting with status 1: Block report processor encountered fatal exception: java.lang.AssertionError

2021-07-20 10:20:23,104 [Block report processor] ERROR util.ExitUtil (ExitUtil.java:terminate(213)) - Terminate called

1: Block report processor encountered fatal exception: java.lang.AssertionError

                at org.apache.hadoop.util.ExitUtil.terminate(ExitUtil.java:304)

                at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$BlockReportProcessingThread.run(BlockManager.java:5315)

Exception in thread "Block report processor" 1: Block report processor encountered fatal exception: java.lang.AssertionError

                at org.apache.hadoop.util.ExitUtil.terminate(ExitUtil.java:304)

                at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$BlockReportProcessingThread.run(BlockManager.java:5315)

Actual issue found at:

2021-07-20 10:20:23,101 [Block report processor] ERROR blockmanagement.BlockManager (BlockManager.java:run(5314)) - java.lang.AssertionError

java.lang.AssertionError

                at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.addStoredBlock(BlockManager.java:3480)

                at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.processAndHandleReportedBlock(BlockManager.java:4280)

                at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.addBlock(BlockManager.java:4202)

                at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.processIncrementalBlockReport(BlockManager.java:4338)

                at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.processIncrementalBlockReport(BlockManager.java:4305)

                at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.processIncrementalBlockReport(FSNamesystem.java:4853)

                at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer$2.run(NameNodeRpcServer.java:1657)

                at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$BlockReportProcessingThread.processQueue(BlockManager.java:5334)

                at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$BlockReportProcessingThread.run(BlockManager.java:5312)

This issue found while working on FGL branch. But, same issue can happen in Trunk also in any error scenario.

hemanthboyina hexiaoqiao