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WAL corruption - HBase - [mail # user]
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...During an upgrade of my cluster to 0.90 to 0.92 over the weekend, the WAL (files in the /hbase/.logs directory) was corrupted and it prevented HBase from starting up. The exact e...
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Author: Bryan Keller,
2012-07-02, 17:30
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Re: Small cluster setup - HBase - [mail # user]
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...I was trying to keep costs down as much as possible. Adding an 11th node just for Zookeeper seems a bit expensive. On Jun 19, 2012, at 1:45 PM, Mikael Sitruk wrote: want Ta...
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Author: Bryan Keller,
2012-06-19, 21:08
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Small cluster setup - HBase - [mail # user]
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...I have a small cluster with 10 nodes. 8 nodes are datanodes/regionservers, and 2 nodes are running HA namenodes and HMaster. The question I have is, what would be the best way to...
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Author: Bryan Keller,
2012-06-19, 20:27
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Task tracker timeout with filtered table scan - HBase - [mail # user]
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...I have a large table that I am running a map reduce job on. The job scans for a particular column value in the table using a TableInputFormat with a filter on the scan. This valu...
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Author: Bryan Keller,
2012-05-31, 16:27
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Re: Created date field - HBase - [mail # user]
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...I'm thinking I could implement a coprocessor to do this. I'm still on 0.90.4 ATM, but it's a thought going forward. I haven't played around with coprocessors yet though so not su...
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Author: Bryan Keller,
2012-02-24, 17:11
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Created date field - HBase - [mail # user]
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...Does anyone know of any strategies for tracking the created date of a row or column, without a checkAndPut() type of solution? I am trying to avoid reading from the table to see ...
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Author: Bryan Keller,
2012-02-23, 23:57
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Re: Lease does not exist exceptions - HBase - [mail # user]
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...To follow up, it does appear that the scenario I described will cause the LeaseException, i.e. if you have a large table, and you scan it with a filter that skips many rows, the ...
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Author: Bryan Keller,
2012-02-21, 05:58
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Lease does not exist exceptions - HBase - [mail # user]
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...I'm seeing "lease does not exist" exceptions under some circumstances, e.g. org.apache.hadoop.ipc.RemoteException: org.apache.hadoop.hbase.regionserver.LeaseException: leas...
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Author: Bryan Keller,
2012-02-21, 00:47
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Re: Max region file size - HBase - [mail # user]
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...Actually, I had pre-created too many regions so most were only half full, I had a couple of regions that were 4gb. On Feb 17, 2012, at 3:48 PM, Bryan Keller wrote: max size...
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Author: Bryan Keller,
2012-02-18, 00:21
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Max region file size - HBase - [mail # user]
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...Is the max region file size the size of the data uncompressed or the max size of the store file? I noticed my store files are ~2.1 gb though I have the max region size set to 4 g...
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Author: Bryan Keller,
2012-02-17, 23:48
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