[ https://issues.apache.org/jira/browse/HADOOP-13712?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Steve Loughran resolved HADOOP-13712. ------------------------------------- Resolution: Won't Fix > S3A open to avoid needless HEAD on the successful execution path > ---------------------------------------------------------------- > > Key: HADOOP-13712 > URL: https://issues.apache.org/jira/browse/HADOOP-13712 > Project: Hadoop Common > Issue Type: Sub-task > Components: fs/s3 > Affects Versions: 2.7.3 > Reporter: Steve Loughran > > S3A's open() operation does a {{getFileStatus()}} check to see if a file is > not a directory before opening with a GET. That initial check will take up at > least one HEAD request if the file is present, more if it isn't. > As the GET itself performs the existence check, it is needless. A successful > GET of a path which doesn't end in "/" means a file was there. The only > reason a getFileStatus call is needed is to choose which error message to > display if the path isn't there: is it an FNFE or is it path-is-directory. > Proposed: reorder the code to do the GET; only if that fails fallback to > getFileStatus() -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org