LoadIncrementalHFiles fails with FileNotFoundException
------------------------------------------------------
Key: HBASE-4030
URL: https://issues.apache.org/jira/browse/HBASE-4030
Project: HBase
Issue Type: Bug
Affects Versions: 0.90.1
Reporter: Adam Phelps
-------- Original Message --------
Subject: Re: LoadIncrementalHFiles bug when regionserver fails to
access file?
Date: Thu, 23 Jun 2011 17:00:04 -0700
From: Ted Yu <[email protected]>
Reply-To: [email protected]
To: [email protected]
CC: CDH Users <[email protected]>
This is due to the handling of HFile.Reader being wrapped in a
try-finally block. However, there is no check as to whether the reader
operation encounters any exception which should determine what to do next.
Please file a JIRA.
Thanks Adam.
On Thu, Jun 23, 2011 at 4:40 PM, Adam Phelps <[email protected]
<mailto:[email protected]>> wrote:
(As a note, this is with CDH3u0 which is based on HBase 0.90.1)
We've been seeing intermittent failures of calls to
LoadIncrementalHFiles. When this happens the node that made the
call will see a FileNotFoundException such as this:
2011-06-23 15:47:34.379566500 java.net
<http://java.net>.__SocketTimeoutException: Call to
s8.XXX/67.215.90.38:60020 <http://67.215.90.38:60020> failed on
socket timeout exception: java.net.SocketTi
meoutException: 60000 millis timeout while waiting for channel to be
ready for read. ch : java.nio.channels.__SocketChannel[connected
local=/67.215.90.51:51605 <http://67.215.90.51:51605> remo
te=s8.XXX/67.215.90.38:60020 <http://67.215.90.38:60020>]
2011-06-23 15:47:34.379570500 java.io.FileNotFoundException:
java.io.FileNotFoundException: File does not exist:
/hfiles/2011/06/23/14/__domainsranked/TopDomainsRan
k.r3v5PRvK/handling/__3557032074765091256
2011-06-23 15:47:34.379573500 at
org.apache.hadoop.hdfs.__DFSClient$DFSInputStream.__openInfo(DFSClient.java:1602)
2011-06-23 15:47:34.379573500 at
org.apache.hadoop.hdfs.__DFSClient$DFSInputStream.<__init>(DFSClient.java:1593)
Over on the regionserver that was loading this we see that it
attempted to load and hit a 60 second timeout:
2011-06-23 15:45:54,634 INFO
org.apache.hadoop.hbase.__regionserver.Store: Validating hfile at
hdfs://namenode.XXX/hfiles/__2011/06/23/14/domainsranked/__TopDomainsRank.r3v5PRvK/__handling/3557032074765091256
for inclusion in store handling region
domainsranked,368449:2011/0/__03/23:category:ffffffff:com.__zynga.static.fishville.__facebook,1305890318961.__d4925aca7852bed32613a509215d42__b
8.
...
2011-06-23 15:46:54,639 INFO org.apache.hadoop.hdfs.__DFSClient:
Failed to connect to /67.215.90.38:50010
<http://67.215.90.38:50010>, add to deadNodes and continue
java.net <http://java.net>.__SocketTimeoutException: 60000 millis
timeout while waiting for channel to be ready for read. ch :
java.nio.channels.__SocketChannel[connected
local=/67.215.90.38:42199 <http://67.215.90.38:42199>
remote=/67.215.90.38:50010 <http://67.215.90.38:50010>]
at org.apache.hadoop.net
<http://org.apache.hadoop.net>.__SocketIOWithTimeout.doIO(__SocketIOWithTimeout.java:164)
at org.apache.hadoop.net
<http://org.apache.hadoop.net>.__SocketInputStream.read(__SocketInputStream.java:155)
at org.apache.hadoop.net
<http://org.apache.hadoop.net>.__SocketInputStream.read(__SocketInputStream.java:128)
at java.io.BufferedInputStream.__fill(BufferedInputStream.java:__218)
at java.io.BufferedInputStream.__read(BufferedInputStream.java:__237)
at java.io.DataInputStream.__readShort(DataInputStream.__java:295)
We suspect this particular problem is a resource contention issue on
our side. However, the loading process proceeds to rename the file
despite the failure:
2011-06-23 15:46:54,657 INFO
org.apache.hadoop.hbase.__regionserver.Store: Renaming bulk load
file
hdfs://namenode.XXX/hfiles/__2011/06/23/14/domainsranked/__TopDomainsRank.r3v5PRvK/__handling/3557032074765091256
to
hdfs://namenode.XXX:8020/__hbase/domainsranked/__d4925aca7852bed32613a509215d42__b8/handling/__3615917062821145533
And then the LoadIncrementalHFiles tries to load the hfile again:
2011-06-23 15:46:55,684 INFO
org.apache.hadoop.hbase.__regionserver.Store: Validating hfile at
hdfs://namenode.XXX/hfiles/__2011/06/23/14/domainsranked/__TopDomainsRank.r3v5PRvK/__handling/3557032074765091256
for inclusion in store handling region
domainsranked,368449:2011/05/__03/23:category:ffffffff:com.__zynga.static.fishville.__facebook,1305890318961.__d4925aca7852bed32613a509215d42__b8.
2011-06-23 15:46:55,685 DEBUG org.apache.hadoop.ipc.__HBaseServer:
IPC Server handler 147 on 60020, call
bulkLoadHFile(hdfs://namenode.__XXX/hfiles/2011/06/23/14/__domainsranked/TopDomainsRank.__r3v5PRvK/handling/__3557032074765091256,
[B@4224508b, [B@5e23f799) from 67.215.90.51:51856
<http://67.215.90.51:51856>: error: java.io.FileNotFoundException:
File does not exist:
/hfiles/2011/06/23/14/__domainsranked/TopDomainsRank.__r3v5PRvK/handling/__3557032074765091256
This eventually leads to the load command failing. It feels to me
like HBase continuing to rename the hfile despite the failure, and
then LoadIncrementalHFiles trying again is a bug. I figured I'd ask
here before opening a ticket for this.
- Adam
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
