Toshihiro Suzuki created HDFS-15215: ---------------------------------------
Summary: The Timestamp for longest write/read lock held log is wrong Key: HDFS-15215 URL: https://issues.apache.org/jira/browse/HDFS-15215 Project: Hadoop HDFS Issue Type: Bug Reporter: Toshihiro Suzuki Assignee: Toshihiro Suzuki I found the Timestamp for longest write/read lock held log is wrong in trunk: {code} 2020-03-10 16:01:26,585 [main] INFO namenode.FSNamesystem (FSNamesystemLock.java:writeUnlock(281)) - Number of suppressed write-lock reports: 0 Longest write-lock held at 1970-01-03 07:07:40,841+0900 for 3ms via java.lang.Thread.getStackTrace(Thread.java:1559) ... {code} Looking at the code, it looks like the timestamp comes from System.nanoTime() that returns the current value of the running Java Virtual Machine's high-resolution time source and this method can only be used to measure elapsed time: https://docs.oracle.com/javase/8/docs/api/java/lang/System.html#nanoTime-- We need to make the timestamp from System.currentTimeMillis(). -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-dev-h...@hadoop.apache.org