[ https://issues.apache.org/jira/browse/HBASE-16754?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gary Helmling updated HBASE-16754: ---------------------------------- Attachment: HBASE-16754.branch-1.2.001.patch Attaching a patch against branch-1.2. There are enough differences between branch-1.2 and branch-1.3 that I'd like to get a full test run. > 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, HBASE-16754.branch-1.001.patch, > HBASE-16754.branch-1.2.001.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)