LiuGuH opened a new pull request, #6784: URL: https://github.com/apache/hadoop/pull/6784
### Description of PR As described [HDFS-17509](https://issues.apache.org/jira/browse/HDFS-17509) hdfs dfs -concat /tmp/merge /tmp/t1 /tmp/t2 When /tmp/merge is a empty file, this command will throw NPE via DFSRouter. Because a file via DFSRouter only can be exists in one namespace, so this RP can implement in this way. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org