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From elsif <elsif.t...@gmail.com>
Subject Re: HBase Exceptions on version 0.20.1
Date Fri, 23 Oct 2009 19:45:23 GMT
Looks like the file was part of a compaction:

2009-10-21 11:58:38,434 INFO
org.apache.hadoop.hbase.regionserver.HRegion: Starting compaction on
region
fc_test,d46a332f60405431f0206d47143044676f1ff15239f24cb72c9743145d15f3e3,1256134371826
2009-10-21 11:58:38,442 DEBUG
org.apache.hadoop.hbase.regionserver.Store: Skipped compaction of 1
file; compaction size of data: 173.6m; Skipped 3 files, size: 176812375
2009-10-21 11:58:38,451 INFO
org.apache.hadoop.hbase.regionserver.HRegion: compaction completed on
region
fc_test,d46a332f60405431f0206d47143044676f1ff15239f24cb72c9743145d15f3e3,1256134371826
in 0sec
2009-10-21 11:58:38,451 INFO
org.apache.hadoop.hbase.regionserver.HRegion: Starting compaction on
region
fc_test,751960d5f43b5e53e806a89afbbd0b819f30de7369db613413022d99a77b54b8,1256135307641
2009-10-21 11:58:38,459 DEBUG
org.apache.hadoop.hbase.regionserver.Store: Compaction size of data:
170.2m; Skipped 1 file(s), size: 131805190
2009-10-21 11:58:38,459 DEBUG
org.apache.hadoop.hbase.regionserver.Store: Started compaction of 3
file(s)  into /hbase/fc_test/compaction.dir/909519914, seqid=113712
2009-10-21 11:58:38,913 INFO org.apache.hadoop.hdfs.DFSClient: Could not
obtain block blk_-6090437519946022724_469173 from any node: 
java.io.IOException: No live nodes contain current block

I don't see anything in the master log relating to this:

2009-10-21 11:58:31,254 INFO org.apache.hadoop.hbase.master.BaseScanner:
RegionManager.metaScanner scan of 1406 row(s) of meta region {server:
10.1.29.20:60020,
 regionname: .META.,,1, startKey: <>}
complete                                 
2009-10-21 11:58:31,254 INFO org.apache.hadoop.hbase.master.BaseScanner:
All 1 .
META. region(s) scanned  
2009-10-21 11:59:26,548 INFO org.apache.hadoop.hbase.master.BaseScanner:
RegionManager.metaScanner scanning meta region {server:
10.1.29.20:60020, regionname: .META.,,1, startKey: <>}


Andrew Purtell wrote:
> Please ignore my earlier response. That does look suspiciously like client error. 
>
> Can you correlate the block /mnt/8d8aa987-017c-4f4c-822c-fe53f4163cee/current/subdir18/blk_-6090437519946022724
to a file? And this file to a region? What is in the master log as relates to this region
around the time of the block errors?
>
>    - Andy
>
>   


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