HDFS-16138. BlockReportProcessingThread exit doesn't print the actual stack (#3244). Contributed by Renukaprasad C.

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java

@@ -5189,6 +5189,8 @@ public class BlockManager implements BlockStatsMXBean {
       try {
         processQueue();
       } catch (Throwable t) {
+        LOG.error("Error while processing the block report, terminating the "
+            + "process", t);
         ExitUtil.terminate(1,
             getName() + " encountered fatal exception: " + t);
       }