[
https://issues.apache.org/jira/browse/HBASE-1809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12759715#action_12759715
]
stack commented on HBASE-1809:
------------------------------
I just ran into this on an 0.20.0RC2 hbase:
{code}
2009-09-24 23:14:45,578 DEBUG org.apache.hadoop.hbase.regionserver.Store:
Completed compaction of info; new storefile is
hdfs://XX.XX.XX.XX:10000/hbase/coral_hbase/.META./1028785192/info/1652111193973935565;
store size is 752.9k
2009-09-24 23:14:45,581 INFO org.apache.hadoop.hbase.regionserver.HRegion:
compaction completed on region .META.,,1 in 0sec
2009-09-24 23:14:45,607 ERROR
org.apache.hadoop.hbase.regionserver.HRegionServer:
java.lang.NullPointerException
at
org.apache.hadoop.hbase.io.hfile.BoundedRangeFileInputStream.read(BoundedRangeFileInputStream.java:97)
at org.apache.hadoop.io.IOUtils.readFully(IOUtils.java:100)
at
org.apache.hadoop.hbase.io.hfile.HFile$Reader.decompress(HFile.java:979)
at
org.apache.hadoop.hbase.io.hfile.HFile$Reader.readBlock(HFile.java:936)
at
org.apache.hadoop.hbase.io.hfile.HFile$Reader$Scanner.loadBlock(HFile.java:1258)
at
org.apache.hadoop.hbase.io.hfile.HFile$Reader$Scanner.seekTo(HFile.java:1141)
at
org.apache.hadoop.hbase.regionserver.StoreFileGetScan.getStoreFile(StoreFileGetScan.java:80)
at
org.apache.hadoop.hbase.regionserver.StoreFileGetScan.get(StoreFileGetScan.java:65)
at org.apache.hadoop.hbase.regionserver.Store.get(Store.java:1442)
at
org.apache.hadoop.hbase.regionserver.HRegion.getClosestRowBefore(HRegion.java:1043)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.getClosestRowBefore(HRegionServer.java:1755)
at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:650)
at
org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:915)
2009-09-24 23:14:45,607 ERROR
org.apache.hadoop.hbase.regionserver.HRegionServer:
java.io.IOException: Stream closed
at
org.apache.hadoop.hdfs.DFSClient$DFSInputStream.read(DFSClient.java:1705)
at java.io.DataInputStream.read(Unknown Source)
at
org.apache.hadoop.hbase.io.hfile.BoundedRangeFileInputStream.read(BoundedRangeFileInputStream.java:99)
at org.apache.hadoop.io.IOUtils.readFully(IOUtils.java:100)
at
org.apache.hadoop.hbase.io.hfile.HFile$Reader.decompress(HFile.java:979)
at
org.apache.hadoop.hbase.io.hfile.HFile$Reader.readBlock(HFile.java:936)
at
org.apache.hadoop.hbase.io.hfile.HFile$Reader$Scanner.loadBlock(HFile.java:1258)
at
org.apache.hadoop.hbase.io.hfile.HFile$Reader$Scanner.seekTo(HFile.java:1141)
at
org.apache.hadoop.hbase.regionserver.StoreFileGetScan.getStoreFile(StoreFileGetScan.java:80)
at
org.apache.hadoop.hbase.regionserver.StoreFileGetScan.get(StoreFileGetScan.java:65)
at org.apache.hadoop.hbase.regionserver.Store.get(Store.java:1442)
at
org.apache.hadoop.hbase.regionserver.HRegion.getClosestRowBefore(HRegion.java:1043)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.getClosestRowBefore(HRegionServer.java:1755)
at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:650)
at
org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:915)
{code}
So a compaction completion and then just after -- about 30ms -- a read comes in
and gets NPE I guess because its going against a closed storefile.
> NPE thrown in BoundedRangeFileInputStream
> -----------------------------------------
>
> Key: HBASE-1809
> URL: https://issues.apache.org/jira/browse/HBASE-1809
> Project: Hadoop HBase
> Issue Type: Bug
> Components: io
> Environment: All
> Reporter: Mathias Herberts
> Assignee: stack
> Priority: Critical
> Fix For: 0.20.1
>
> Attachments: 1809-v2.patch, 1809.patch, HFile-returnDecompressor.patch
>
>
> NPE is thrown in BoundedRangeFileInputStream.read when attempting to
> synchronize on 'in' (line 97).
> This probably means the BRFIS was created with a null FSDIS.
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