My most recent test made it past a couple days, and then one of the
region servers failed during a compaction:
2009-11-06 09:09:59,284 INFO
org.apache.hadoop.hbase.regionserver.HRegion: Start
ing compaction on region
fc_test,e9e8bab582b05d18d550d4112258b4c29707c33ebdd45447c20cce5c5a9e95a0,1257440539235
2009-11-06 09:09:59,294 WARN org.apache.hadoop.hbase.regionserver.HLog:
IPC Server handler 6 on 60020 took 4611ms appending an edit to hlog;
editcount=66
2009-11-06 09:10:14,298 WARN org.apache.hadoop.hbase.regionserver.HLog:
IPC Server handler 7 on 60020 took 3414ms appending an edit to hlog;
editcount=93
2009-11-06 09:10:17,729 WARN org.apache.hadoop.hbase.regionserver.HLog:
IPC Server handler 7 on 60020 took 3430ms appending an edit to hlog;
editcount=94
2009-11-06 09:10:17,734 WARN org.apache.hadoop.hbase.regionserver.HLog:
IPC Server handler 5 on 60020 took 6889ms appending an edit to hlog;
editcount=95
2009-11-06 09:10:17,739 WARN org.apache.hadoop.hbase.regionserver.HLog:
IPC Server handler 1 on 60020 took 6894ms appending an edit to hlog;
editcount=96
2009-11-06 09:10:17,743 WARN org.apache.hadoop.hbase.regionserver.HLog:
IPC Server handler 0 on 60020 took 6898ms appending an edit to hlog;
editcount=97
2009-11-06 09:10:17,745 WARN org.apache.hadoop.hbase.regionserver.HLog:
IPC Server handler 3 on 60020 took 6901ms appending an edit to hlog;
editcount=98
2009-11-06 09:10:17,752 WARN org.apache.hadoop.hbase.regionserver.HLog:
IPC Server handler 9 on 60020 took 6908ms appending an edit to hlog;
editcount=99
2009-11-06 09:10:20,047 WARN org.apache.hadoop.hbase.regionserver.HLog:
IPC Server handler 2 on 60020 took 9203ms appending an edit to hlog;
editcount=100
2009-11-06 09:10:20,074 INFO
org.apache.hadoop.hbase.regionserver.MemStoreFlusher: Forced flushing of
fc_test,d96130bef65b02598c22140983e596f78cb3aac9249361054a3ac6ca287eb6ed,1257447874792
because global memstore limit of 2.3g exceeded; currently 2.3g and
flushing till 1.5g
2009-11-06 09:10:20,079 WARN org.apache.hadoop.hbase.regionserver.HLog:
IPC Server handler 8 on 60020 took 9235ms appending an edit to hlog;
editcount=107
2009-11-06 09:10:20,081 WARN org.apache.hadoop.hbase.regionserver.HLog:
IPC Server handler 6 on 60020 took 9238ms appending an edit to hlog;
editcount=108
.
.
.
2009-11-06 09:10:25,953 WARN org.apache.hadoop.hbase.regionserver.HLog:
IPC Server handler 4 on 60020 took 15105ms appending an edit to hlog;
editcount=114
2009-11-06 09:10:44,071 INFO
org.apache.hadoop.hbase.regionserver.HRegionServer: Got ZooKeeper event,
state: Disconnected, type: None, path: null
2009-11-06 09:15:37,144 WARN org.apache.hadoop.hbase.util.Sleeper: We
slept 286007ms, ten times longer than scheduled: 10000
2009-11-06 09:15:37,146 INFO
org.apache.hadoop.hbase.regionserver.HRegionServer: Scanner
-1103392202834949346 lease expired
2009-11-06 09:15:37,146 FATAL
org.apache.hadoop.hbase.regionserver.HRegionServer: OutOfMemoryError,
aborting.
java.lang.OutOfMemoryError: Java heap space
at org.apache.hadoop.hbase.client.Put.readFields(Put.java:342)
at
org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:421)
at
org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:350)
at
org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:399)
at
org.apache.hadoop.hbase.ipc.HBaseRPC$Invocation.readFields(HBaseRPC.java:174)
at
org.apache.hadoop.hbase.ipc.HBaseServer$Connection.processData(HBaseServer.java:867)
Upon restarting the regionserver the following messages are written to
the log file over and over:
2009-11-07 00:01:00,299 WARN org.apache.hadoop.hbase.regionserver.Store:
Exception processing reconstruction log
hdfs://hfs-027010:8020/hbase/fc_test/338686730/oldlogfile.log opening
data
org.apache.hadoop.fs.ChecksumException: Checksum error:
/blk_7784569113613463369:of:/hbase/fc_test/338686730/oldlogfile.log at
2818048 at
org.apache.hadoop.fs.FSInputChecker.verifySum(FSInputChecker.java:277)
at
org.apache.hadoop.fs.FSInputChecker.readChecksumChunk(FSInputChecker.java:241)
at
org.apache.hadoop.fs.FSInputChecker.read1(FSInputChecker.java:189)
at
org.apache.hadoop.fs.FSInputChecker.read(FSInputChecker.java:158)
at
org.apache.hadoop.hdfs.DFSClient$BlockReader.read(DFSClient.java:1147)
at
org.apache.hadoop.hdfs.DFSClient$DFSInputStream.readBuffer(DFSClient.java:1696)
at
org.apache.hadoop.hdfs.DFSClient$DFSInputStream.read(DFSClient.java:1746)
at java.io.DataInputStream.readFully(Unknown Source)
@
My hbase settings are:
export HBASE_HEAPSIZE=6000
export HBASE_OPTS="$HBASE_OPTS -XX:NewSize=6m -XX:MaxNewSize=6m
-XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode"
I have 16G of memory on each node with 6G allocated to the region server
and 2G allocated to the datanode.
Is there any way to salvage the contents of the log file or is my only
option to move it out of the way and loose all the edits?
Would it be possible to have the regionserver do a clean shutdown before
it goes down the GC spiral?
stack wrote:
> Just to say I'm starting up test now.... will report back. Thanks for your
> patience.
> St.Ack
>
>
>
