[ https://issues.apache.org/jira/browse/HADOOP-14600?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chris Douglas updated HADOOP-14600: ----------------------------------- Attachment: HADOOP-14600.007.patch Thanks for being patient with the reviews, [~myapachejira]. I made a few changes to the patch, almost all to make the patch adhere to the [code conventions|http://www.oracle.com/technetwork/java/javase/documentation/codeconvtoc-136057.html] ([wiki|https://wiki.apache.org/hadoop/HowToContribute]). Could you take a look and make sure this didn't accidentally break your changes? The only intended functional change was to {{Helper}} (renamed {{StatUtils}}), to use the {{recursive}} parameter. It looks like this was accidentally unused. > LocatedFileStatus constructor forces RawLocalFS to exec a process to get the > permissions > ---------------------------------------------------------------------------------------- > > Key: HADOOP-14600 > URL: https://issues.apache.org/jira/browse/HADOOP-14600 > Project: Hadoop Common > Issue Type: Bug > Components: fs > Affects Versions: 2.7.3 > Environment: file:// in a dir with many files > Reporter: Steve Loughran > Assignee: Ping Liu > Attachments: HADOOP-14600.001.patch, HADOOP-14600.002.patch, > HADOOP-14600.003.patch, HADOOP-14600.004.patch, HADOOP-14600.005.patch, > HADOOP-14600.006.patch, HADOOP-14600.007.patch, > TestRawLocalFileSystemContract.java > > > Reported in SPARK-21137. a {{FileSystem.listStatus}} call really craws > against the local FS, because {{FileStatus.getPemissions}} call forces > {{DeprecatedRawLocalFileStatus}} tp spawn a process to read the real UGI > values. > That is: for every other FS, what's a field lookup or even a no-op, on the > local FS it's a process exec/spawn, with all the costs. This gets expensive > if you have many files. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org