Tao Yang created YARN-5749:
------------------------------
Summary: Fail to localize resources after health status for local
dirs changed occurred by the change of FileContext#setUMask
Key: YARN-5749
URL: https://issues.apache.org/jira/browse/YARN-5749
Project: Hadoop YARN
Issue Type: Bug
Components: nodemanager
Affects Versions: 3.0.0-alpha2
Reporter: Tao Yang
HADOOP-13440 updated FileContext#setUMask method to change umask from local
variable to global variable through updating conf value of
"fs.permissions.umask-mode".
This method might be called to update value for global umask by LogWriter and
ResourceLocalizationService.
After an application finished, LogWriter will update the umask value to be
"137" while uploading logs for containers. Then the global umask value is
updated right now and will affect other services. In my case , After one of
local directories is marked as bad (because the disk used space is above the
threshold defined by
"yarn.nodemanager.disk-health-checker.max-disk-utilization-per-disk-percentage"),
ResourceLocalizationService will reinitailize the left local directories and
change the permission from "drwxr-xr-x" to "drw-r-----"(umask value changed
from "022" to "137"). From now on, The NM will always fail to localize
resources as the local directories is not executable.
Detail logs are as follows:
{code}
2016-10-19 15:36:32,650 WARN
org.apache.hadoop.fs.LocalDirAllocator$AllocatorPerContext: Disk Error
Exception:
org.apache.hadoop.util.DiskChecker$DiskErrorException: Directory is not
executable: /home/yangtao.yt/hadoop-data/nm-local-dir-2/nmPrivate
at
org.apache.hadoop.util.DiskChecker.checkAccessByFileMethods(DiskChecker.java:215)
at
org.apache.hadoop.util.DiskChecker.checkDirAccess(DiskChecker.java:190)
at org.apache.hadoop.util.DiskChecker.checkDir(DiskChecker.java:124)
at
org.apache.hadoop.fs.LocalDirAllocator$AllocatorPerContext.createPath(LocalDirAllocator.java:350)
at
org.apache.hadoop.fs.LocalDirAllocator$AllocatorPerContext.getLocalPathForWrite(LocalDirAllocator.java:412)
at
org.apache.hadoop.fs.LocalDirAllocator.getLocalPathForWrite(LocalDirAllocator.java:151)
at
org.apache.hadoop.fs.LocalDirAllocator.getLocalPathForWrite(LocalDirAllocator.java:132)
at
org.apache.hadoop.fs.LocalDirAllocator.getLocalPathForWrite(LocalDirAllocator.java:116)
at
org.apache.hadoop.yarn.server.nodemanager.LocalDirsHandlerService.getLocalPathForWrite(LocalDirsHandlerService.java:563)
at
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService$LocalizerRunner.run(ResourceLocalizationService.java:1162)
2016-10-19 15:36:32,650 INFO
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService:
Localizer failed
org.apache.hadoop.util.DiskChecker$DiskErrorException: Could not find any valid
local directory for nmPrivate/container_e26_1476858409240_0004_01_000005.tokens
at
org.apache.hadoop.fs.LocalDirAllocator$AllocatorPerContext.getLocalPathForWrite(LocalDirAllocator.java:441)
at
org.apache.hadoop.fs.LocalDirAllocator.getLocalPathForWrite(LocalDirAllocator.java:151)
at
org.apache.hadoop.fs.LocalDirAllocator.getLocalPathForWrite(LocalDirAllocator.java:132)
at
org.apache.hadoop.fs.LocalDirAllocator.getLocalPathForWrite(LocalDirAllocator.java:116)
at
org.apache.hadoop.yarn.server.nodemanager.LocalDirsHandlerService.getLocalPathForWrite(LocalDirsHandlerService.java:563)
at
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService$LocalizerRunner.run(ResourceLocalizationService.java:1162)
2016-10-19 15:36:32,652 INFO
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl:
Container container_e26_1476858409240_0004_01_000005 transitioned from
LOCALIZING to LOCALIZATION_FAILED
{code}
In my opinion, it's better if FileContext can compatible with past usage.
Please feel free to give your suggestions.
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