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[HBASE-6564] HDFS space is not reclaimed when a column family is deleted - HBase - [issue]
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...When a column family of a table is deleted, the HDFS space of the column family does not seem to be reclaimed even after a major compaction....
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http://issues.apache.org/jira/browse/HBASE-6564
Author: J Mohamed Zahoor,
2012-12-19, 09:14
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Re: Scan exception when running MR - HBase - [mail # user]
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...No Worries. It was a stray hbase jar that caused the problem. ./zahoor On 22-Oct-2012, at 10:43 PM, Bryan Beaudreault wrote: wrote: org.apache.hadoop.hbase.client.Sc...
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Author: J Mohamed Zahoor,
2012-10-23, 06:51
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Re: Scan exception when running MR - HBase - [mail # user]
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...Cool… But my map reduce doesn't even start… It fails while creating a record reader... The record reader fails in TableMapReduceUtil.convertStringToScan(conf.get(SCAN)); and thro...
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Author: J Mohamed Zahoor,
2012-10-22, 16:32
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Re: Scan exception when running MR - HBase - [mail # user]
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...I am using 0.94.1 ./zahoor On 22-Oct-2012, at 9:17 PM, J Mohamed Zahoor wrote: fine.. org.apache.hadoop.hbase.mapreduce.TableInputFormatBase.createRecordReader( Tabl...
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Author: J Mohamed Zahoor,
2012-10-22, 15:51
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Scan exception when running MR - HBase - [mail # user]
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...Hi I am facing a scanner exception like this when i run a mr job. Both the input and output are hbase tables (different tables)… This comes sporadically on some mapper and all other ma...
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Author: J Mohamed Zahoor,
2012-10-22, 15:47
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Re: Slow scanning for PrefixFilter on EncodedBlocks - HBase - [mail # user]
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...+1 for making PrefixFIlter seek instead of using a startRow explicitly. ./zahoor On Thu, Oct 18, 2012 at 4:05 AM, lars hofhansl wrote: ...
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Author: J Mohamed Zahoor,
2012-10-18, 07:45
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Re: Slow scanning for PrefixFilter on EncodedBlocks - HBase - [mail # user]
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...First i upgraded my cluster to 94.2.. even then the problem persisted.. Then i moved to using startRow instead of prefix filter.. ,/zahoor On Wed, Oct 17, 2012 at 2:12 PM, J Moh...
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Author: J Mohamed Zahoor,
2012-10-17, 08:44
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Re: Slow scanning for PrefixFilter on EncodedBlocks - HBase - [mail # user]
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...Sorry for the delay. It looks like the problem is because of PrefixFilter... I assumed that i does a seek... If i use startRow instead.. it works fine.. But is it the correct app...
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Author: J Mohamed Zahoor,
2012-10-17, 08:42
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Re: Slow scanning for PrefixFilter on EncodedBlocks - HBase - [mail # user]
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...Is this related to HBASE-6757 ? I use a filter list with - prefix filter - filter list of column filters /zahoor On Monday, October 15, 2012, J Mohamed Zahoor wrote...
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Author: J Mohamed Zahoor,
2012-10-15, 17:27
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Slow scanning for PrefixFilter on EncodedBlocks - HBase - [mail # user]
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...Hi My scanner performance is very slow when using a Prefix filter on a **Encoded Column** ( encoded using FAST_DIFF on both memory and disk). I am using 94.1 hbase. jstack shows ...
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Author: J Mohamed Zahoor,
2012-10-15, 15:21
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