[
https://issues.apache.org/jira/browse/HBASE-16754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15585976#comment-15585976
]
Gary Helmling commented on HBASE-16754:
---------------------------------------
Committed to master. The patch does not apply cleanly to branch-1 due to
TestWALSplit being missing there (last touched in HBASE-15302).
> Regions failing compaction due to referencing non-existent store file
> ---------------------------------------------------------------------
>
> Key: HBASE-16754
> URL: https://issues.apache.org/jira/browse/HBASE-16754
> Project: HBase
> Issue Type: Bug
> Affects Versions: 1.2.3
> Reporter: Gary Helmling
> Assignee: Gary Helmling
> Priority: Blocker
> Fix For: 1.3.0
>
> Attachments: HBASE-16754.001.patch
>
>
> Running a mixed read write workload on a recent build off branch-1.3, we are
> seeing compactions occasionally fail with errors like the following (actual
> filenames replaced with placeholders):
> {noformat}
> 16/09/27 16:57:28 ERROR regionserver.CompactSplitThread: Compaction selection
> failed Store = XXX, pri = 116
> java.io.FileNotFoundException: File does not exist:
> hdfs://.../hbase/data/ns/table/region/cf/XXfilenameXX
> at
> org.apache.hadoop.hdfs.DistributedFileSystem$22.doCall(DistributedFileSystem.java:1309)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem$22.doCall(DistributedFileSystem.java:1301)
> at
> org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1317)
> at
> org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:421)
>
> at
> org.apache.hadoop.hbase.regionserver.StoreFileInfo.getReferencedFileStatus(StoreFileInfo.java:342)
> at
> org.apache.hadoop.hbase.regionserver.StoreFileInfo.getFileStatus(StoreFileInfo.java:355)
>
> at
> org.apache.hadoop.hbase.regionserver.StoreFileInfo.getModificationTime(StoreFileInfo.java:360)
> at
> org.apache.hadoop.hbase.regionserver.StoreFile.getModificationTimeStamp(StoreFile.java:321)
>
> at
> org.apache.hadoop.hbase.regionserver.StoreUtils.getLowestTimestamp(StoreUtils.java:63)
> at
> org.apache.hadoop.hbase.regionserver.compactions.RatioBasedCompactionPolicy.shouldPerformMajorCompaction(RatioBasedCompactionPolicy.java:63)
> at
> org.apache.hadoop.hbase.regionserver.compactions.SortedCompactionPolicy.selectCompaction(SortedCompactionPolicy.java:82)
>
> at
> org.apache.hadoop.hbase.regionserver.DefaultStoreEngine$DefaultCompactionContext.select(DefaultStoreEngine.java:107)
>
> at
> org.apache.hadoop.hbase.regionserver.HStore.requestCompaction(HStore.java:1644)
> at
> org.apache.hadoop.hbase.regionserver.CompactSplitThread.selectCompaction(CompactSplitThread.java:373)
> at
> org.apache.hadoop.hbase.regionserver.CompactSplitThread.access$100(CompactSplitThread.java:59)
> at
> org.apache.hadoop.hbase.regionserver.CompactSplitThread$CompactionRunner.doCompaction(CompactSplitThread.java:498)
> at
> org.apache.hadoop.hbase.regionserver.CompactSplitThread$CompactionRunner.run(CompactSplitThread.java:568)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> 16/09/27 17:01:31 ERROR regionserver.CompactSplitThread: Compaction selection
> failed Store = XXX, pri = 115
> java.io.FileNotFoundException: File does not exist:
> hdfs://.../hbase/data/ns/table/region/cf/XXfilenameXX
> at
> org.apache.hadoop.hdfs.DistributedFileSystem$22.doCall(DistributedFileSystem.java:1309)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem$22.doCall(DistributedFileSystem.java:1301)
> at
> org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1317)
> at
> org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:421)
>
> at
> org.apache.hadoop.hbase.regionserver.StoreFileInfo.getReferencedFileStatus(StoreFileInfo.java:342)
> at
> org.apache.hadoop.hbase.regionserver.StoreFileInfo.getFileStatus(StoreFileInfo.java:355)
>
> at
> org.apache.hadoop.hbase.regionserver.StoreFileInfo.getModificationTime(StoreFileInfo.java:360)
> at
> org.apache.hadoop.hbase.regionserver.StoreFile.getModificationTimeStamp(StoreFile.java:321)
>
> at
> org.apache.hadoop.hbase.regionserver.StoreUtils.getLowestTimestamp(StoreUtils.java:63)
> at
> org.apache.hadoop.hbase.regionserver.compactions.RatioBasedCompactionPolicy.shouldPerformMajorCompaction(RatioBasedCompactionPolicy.java:63)
> at
> org.apache.hadoop.hbase.regionserver.compactions.SortedCompactionPolicy.selectCompaction(SortedCompactionPolicy.java:82)
>
> at
> org.apache.hadoop.hbase.regionserver.DefaultStoreEngine$DefaultCompactionContext.select(DefaultStoreEngine.java:107)
>
> at
> org.apache.hadoop.hbase.regionserver.HStore.requestCompaction(HStore.java:1644)
> at
> org.apache.hadoop.hbase.regionserver.CompactSplitThread.selectCompaction(CompactSplitThread.java:373)
> at
> org.apache.hadoop.hbase.regionserver.CompactSplitThread.access$100(CompactSplitThread.java:59)
> at
> org.apache.hadoop.hbase.regionserver.CompactSplitThread$CompactionRunner.doCompaction(CompactSplitThread.java:498)
> at
> org.apache.hadoop.hbase.regionserver.CompactSplitThread$CompactionRunner.run(CompactSplitThread.java:568)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
> It looks like we somehow deleted the underlying store file from HDFS
> (probably after it was compacted away), after the path was loaded into the
> list of store files for the region.
> For two cases of this that I looked into, in both cases the region in
> question was previously hosted by a regionserver that stalled, then aborted
> after its zk session expired. In both cases it looked like a compaction was
> also in progress. So it's possible that the compacted files are being
> deleted from HDFS by the stalled regionserver before it aborts, but after the
> region has been opened by a new regionserver. That's speculation though and
> needs to be substantiated.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
