[ https://issues.apache.org/jira/browse/HADOOP-15571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vinod Kumar Vavilapalli updated HADOOP-15571: --------------------------------------------- Status: Patch Available (was: Open) > After HADOOP-13440, multiple filesystems/file-contexts created with the same > Configuration object are forced to have the same umask > ----------------------------------------------------------------------------------------------------------------------------------- > > Key: HADOOP-15571 > URL: https://issues.apache.org/jira/browse/HADOOP-15571 > Project: Hadoop Common > Issue Type: Bug > Reporter: Vinod Kumar Vavilapalli > Assignee: Vinod Kumar Vavilapalli > Priority: Critical > Attachments: HADOOP-15571.1.txt, HADOOP-15571.txt > > > Ran into a super hard-to-debug issue due to this. [Edit: Turns out the same > issue as YARN-5749 that [~Tao Yang] ran into] > h4. Issue > Configuration conf = new Configuration(); > fc1 = FileContext.getFileContext(uri1, conf); > fc2 = FileContext.getFileContext(uri2, conf); > fc.setUMask(umask_for_fc1); // Screws up umask for fc2 also! > This was not the case before HADOOP-13440. > h4. Symptoms: > h5. Scenario I ran into > When trying to localize a HDFS directory (hdfs:///my/dir/1.txt), NodeManager > tries to replicate the directory structure on the local file-system > ($yarn-local-dirs/filecache/my/dir/1.txt). > Now depending on whether NM has ever done a log-aggregation (completely > unrelated code that sets umask to be 137 for its own files on HDFS), the > directories /my and /my/dir on local-fs may have different permissions. In > the specific case where NM did log-aggregation, /my/dir was created with 137 > umask and so localization of 1.txt completely failed due to absent directory > executable permissions! > h5. Previous scenarios: > We ran into this before in test-cases and instead of fixing the root-cause, > we just fixed the test-cases: YARN-5679 / YARN-5749 -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org