Weiwei Yang created HDFS-12744: ---------------------------------- Summary: More logs when short-circuit read is failed and disabled Key: HDFS-12744 URL: https://issues.apache.org/jira/browse/HDFS-12744 Project: Hadoop HDFS Issue Type: Improvement Components: datanode Reporter: Weiwei Yang Assignee: Weiwei Yang
Short-circuit read (SCR) failed with following error {noformat} 2017-10-21 16:42:28,024 WARN [B.defaultRpcServer.handler=7,queue=7,port=16020] impl.BlockReaderFactory: BlockReaderFactory(xxx): unknown response code ERROR while attempting to set up short-circuit access. Block xxx is not valid {noformat} then short-circuit read is disabled for *10 minutes* without any warning message given in the log. This causes us spent some more time to figure out why we had a long time window that SCR was not working. Propose to add a warning log (other places already did) to indicate SCR is disabled and some more logging in DN to display what happened. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-dev-h...@hadoop.apache.org