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Re: Excessive filtering in RegionScannerImpl - HBase - [mail # dev]
...Filters can work at the row level and the KV level. In RegionScannerImpl.nextInternal we do the row level filtering and in StoreScanner.next() via ScanQueryMatcher we do the KV based filteri...
   Author: lars hofhansl, 2013-10-12, 23:17
Re: Why HBase reduce the size of data when writing to the disk - HBase - [mail # user]
...Are you setting the timestamp yourself?     From: Farrokh Shahriari  To: [EMAIL PROTECTED]; lars hofhansl  Cc: "[EMAIL PROTECTED]"  Sent: Saturday, October 12, 2013 ...
   Author: lars hofhansl, 2013-10-12, 22:55
Re: skipKVsNewerThanReadpoint in StoreFileScanner and MemStoreScanner - HBase - [mail # dev]
...Taking a quick look... It is easy to reduce the ThreadLocal calls by 50% without any refactoring in the Memstore.  Also thinking about this more, we already have metadata in HFile about...
   Author: lars hofhansl, 2013-10-12, 03:55
Re: Haeinsa: linear scalable multi-row transaction library for HBase - HBase - [mail # user]
...Thanks Andrew.  This sounds very interesting! Will definitely have a look.  ________________________________ From: Myungbo Kim  To: [EMAIL PROTECTED]  Cc: Jung-Haeng Lee ...
   Author: lars hofhansl, 2013-10-10, 17:59
Re: HBase Random Read latency > 100ms - HBase - [mail # user]
...Good call. Could try to enable hbase.regionserver.checksum.verify, which will cause HBase to do its own checksums rather than relying on HDFS (and which saves 1 IO per block get).  I do...
   Author: lars hofhansl, 2013-10-09, 05:29
Re: Building HBase 0.94.12 for Hadoop 3.0.0 - HBase - [mail # user]
...Hi Siddarth,  did you try to build against Hadoop 3.0.0 and it failed?      ________________________________  From: Siddharth Karandikar  To: [EMAIL PROTECTED] ...
   Author: lars hofhansl, 2013-10-03, 16:01
Re: Batch method - HBase - [mail # user]
...Hi Renato,  are seeing a specific issue or are wondering looking at the code?  You should get an exception if any of the operations fail. That exception has the all the information...
   Author: lars hofhansl, 2013-10-02, 23:53
Re: How to understand the TS of each data version? - HBase - [mail # user]
...Not sure I follow. You have a single row with two columns? In your scenario you'd see that supplier c has 15k iff you query the latest data, which seems to be what you want. Note that you co...
   Author: lars hofhansl, 2013-09-27, 17:02
Re: Warning messages in hbase logs - HBase - [mail # user]
...You probably ran into [HBASE-6870] - HTable#coprocessorExec always scan the whole table (0.94.8)  Or maybe one of these:  [HBASE-8806] - Row locks are acquired repeatedly in HRegio...
   Author: lars hofhansl, 2013-09-26, 04:46
Re: KeyValue.getLength() question - HBase - [mail # user]
...Are you on the client or the server? In the server the KeyValue objects are created in HFileReaderV2.ScannerV2.getKeyValue(). There you will see that a KeyValue object is really just a "poin...
   Author: lars hofhansl, 2013-09-26, 04:30
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