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From bijieshan <bijies...@huawei.com>
Subject Regions count is not consistant between the WEBUI and LoaderBalancer
Date Tue, 17 May 2011 09:32:21 GMT
This problem seems happened with high probability, I have saw it several times.

Here's the description about this problem:

1.From the WEBUI, I can see the regions count is:35087.
2.From the HBase shell, I counted the '.META.' table, and it showed there's 35085 regions.

hbase(main):001:0> count '.META.',10000
11/05/14 14:12:22 INFO jute.BinaryInputArchive: Expecting maxBufferString as an integer but
got as null.Hence setting to default value 1048575
Current count: 10000, row: hello,080472,1305272720373.ec0eb8c1bb414967241155cf0985241e.
Current count: 20000, row: hello,161272,1305272956858.e16008645368590dfa735abc61024db6.
Current count: 30000, row: ufdr,061870,1305171874909.eddc77cbfa2f93feef49f4485d9b88a5.
35085 row(s) in 2.5250 seconds

3.From the HMaster logs, I saw that:

2011-05-14 14:13:57,546 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down
2011-05-14 14:14:01,303 INFO org.apache.hadoop.hbase.master.LoadBalancer: Skipping load balancing.
 servers=4 regions=35089 average=8772.25 mostloaded=8773 leastloaded=8773
2011-05-14 14:14:08,706 DEBUG org.apache.hadoop.hbase.master.CatalogJanitor: Scanned 35085
catalog row(s) and gc'd 0 unreferenced parent region(s)

35087 & 35085 , so where's the problem? Were they from the different sets?


Jieshan Bean


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