[YARN-8627] EntityGroupFSTimelineStore hdfs done directory keeps on accumulating

• Type: Bug
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.8.0
• Component/s: timelineserver
• Assignee: Tarun Parimi
• Reporter: Tarun Parimi
• Created: 06/Aug/18 08:04
• Updated: 07/Oct/19 03:30

Description

The EntityLogCleaner threads exits with the following ERROR every time it runs.  

2018-07-18 19:59:39,837 INFO timeline.EntityGroupFSTimelineStore (EntityGroupFSTimelineStore.java:cleanLogs(462)) - Deleting hdfs://namenode/ats/done/1499684568068/0000/018/application_1499684568068_18268
2018-07-18 19:59:39,844 INFO timeline.EntityGroupFSTimelineStore (EntityGroupFSTimelineStore.java:cleanLogs(462)) - Deleting hdfs://namenode/ats/done/1499684568068/0000/018/application_1499684568068_18270
2018-07-18 19:59:39,848 ERROR timeline.EntityGroupFSTimelineStore (EntityGroupFSTimelineStore.java:run(899)) - Error cleaning files  java.io.FileNotFoundException: File hdfs://namenode/ats/done/1499684568068/0000/018/application_1499684568068_18270 does not exist.  at org.apache.hadoop.hdfs.DistributedFileSystem$DirListingIterator.<init>(DistributedFileSystem.java:1062)  at org.apache.hadoop.hdfs.DistributedFileSystem$DirListingIterator.<init>(DistributedFileSystem.java:1069)  at org.apache.hadoop.hdfs.DistributedFileSystem$DirListingIterator.<init>(DistributedFileSystem.java:1040)  at org.apache.hadoop.hdfs.DistributedFileSystem$23.doCall(DistributedFileSystem.java:1019)  at org.apache.hadoop.hdfs.DistributedFileSystem$23.doCall(DistributedFileSystem.java:1015)  at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)  at org.apache.hadoop.hdfs.DistributedFileSystem.listStatusIterator(DistributedFileSystem.java:1015)  at org.apache.hadoop.yarn.server.timeline.EntityGroupFSTimelineStore.shouldCleanAppLogDir(EntityGroupFSTimelineStore.java:480) 

 
Each time the thread gets scheduled, it is a different folder encountering the error. As a result, the thread is not able to clean all the old done directories, since it stops after this error.