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Re: Finally spinning first 0.94.11 RC - HBase - [mail # dev]
...All. Clear. No need to wait for jenkins, since I am doing those over the 0.94.11RC0 tag.     ________________________________  From: lars hofhansl  To: hbase-dev   S...
   Author: lars hofhansl, 2013-08-13, 23:50
Re: Bulkloading impacts to block locality (0.94.6) - HBase - [mail # dev]
...Now that I wrote this, I think we should improve that. For example we could add an RPC to the regionserver and have the regionserver who would own the region copy the appropriate part of the...
   Author: lars hofhansl, 2013-08-13, 04:58
Re: PrefixFilter - HBase - [mail # user]
...What Anil said. Filters are executed per Store (i.e. per region per column family). So each filter in each store would need seek to the start row. It is more efficient to let the scanner do ...
   Author: lars hofhansl, 2013-08-13, 04:45
Re: IncreasingToUpperBoundRegionSplitPolicy.shouldSplit() logic question - HBase - [mail # dev]
...File a jira, JMS? Looks like to simple fix, can pull into 0.94.11 (which I'll spin early next week, promised).      ________________________________  From: Stack  To...
   Author: lars hofhansl, 2013-08-11, 05:39
Re: Using HBase timestamps as natural versioning - HBase - [mail # user]
...If you want deletes to work correctly you should enable KEEP_DELETED_CELLS for your column families (I still think that should be the default anyway). Otherwise time-range queries will not b...
   Author: lars hofhansl, 2013-08-11, 05:21
Re: Hadoop-HBase table hierarchical column scan - HBase - [mail # user]
...It all depends on how many other columns you have, whether the skip-scanning the filter does is beneficial or not. It should not worsen the performance, though. If it does we should do some ...
   Author: lars hofhansl, 2013-08-10, 04:38
Re: scan very slow in hbase - HBase - [mail # user]
...In addition to that, make sure you have scanner caching enabled (Scan.setCaching). By default (in 0.94) every call to scanner.next() causes its own RPC request.     _______________...
   Author: lars hofhansl, 2013-08-06, 16:29
Re: Heads up, HTablePool will be deprecated in 0.94, 0.95/0.96, and removed in 0.98 - HBase - [mail # dev]
...Thanks Andy,  as part of the patch I'll convert some of the unitests. There are some conveniences we will no longer have such as a method that can create a table and return and HTable t...
   Author: lars hofhansl, 2013-08-06, 00:51
0.94.11 this week - HBase - [mail # dev]
...Any last wishes (for 0.94.11)?  ...
   Author: lars hofhansl, 2013-08-05, 20:21
Re: How many column families in one table ? - HBase - [mail # user]
...BigTable has one more level of abstraction: Locality Groups A Column Family in HBase is both a Column Faimily and a Locality Group: It is a group of columns *and* it defines storage paramete...
   Author: lars hofhansl, 2013-08-04, 16:03
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