Home | About | Sematext search-lucene.com search-hadoop.com
clear query|facets|time Search criteria: compactions.   Results from 1 to 10 from 21 (0.148s).
Did you mean:
SpellChecker(?): compaction 
Loading phrases to help you
refine your search...
Custom compaction - HBase - [mail # user]
...Is there a way to customize the compaction function (like a hook provided b y the API) or is it invisible to the user?  Thank you Vidhya ...
   Author: Vidhyashankar Venkatarama..., 2010-05-26, 22:56
Configs for Hbase compaction switch... - HBase - [mail # user]
...I want to run some experiments with the major compactions turned off..  There are two parameters that I can see both of which have to be modified t o turn major compactions off (am I right...
... here?). hbase.hstore.compactionThreshold and hbase.hregion.majorcompaction...  But the config file's comments say that setting compactionThreshold to a hi gh value may lead to memory issues...
[+ show more]
   Author: Vidhyashankar Venkatarama..., 2010-05-25, 14:06
Effect of turning major compactions off.. - HBase - [mail # user]
...Are there any side effects to turning major compactions off, other than jus t a hit in the read performance?  I was trying to merge a 120 Gig update (modify/insert/delete operations...
...) in to a 2 TB fully compacted Hbase table with 5 region servers using a map red uce job.. Each RS was serving around 2000 regions (256 MB max size)... Majo r compactions were turned off before...
[+ show more]
   Author: Vidhyashankar Venkatarama..., 2010-05-26, 16:07
Additional disk space required for Hbase compactions.. - HBase - [mail # user]
...Hi guys,   I am quite new to Hbase.. I am trying to figure out the max additional di sk space required for compactions..    If the set of small Hfiles amount to a size of U in total, before...
... a major  compaction happens and the 'behemoth' HFile has size M, assuming the resul tant size of the Hfile after compaction is U+M (worst case has only inserti ons) and a replication factor of r...
[+ show more]
   Author: Vidhyashankar Venkatarama..., 2010-05-17, 18:55
Questions on Region split.. - HBase - [mail # user]
...This is from the HBAse architecture page about region splits: "When a compaction is triggered in a child, the data from the parent is cop ied to the child. When both children have performed...
... a compaction, the paren t region is garbage collected. "  What happens during a region split when major compactions are disabled?  Also, the decision to split a region is based on the combined size...
[+ show more]
   Author: Vidhyashankar Venkatarama..., 2010-06-16, 21:49
Difference between config parameters... - HBase - [mail # user]
...Can you tell me the difference between hbase.hstore.compactionThreshold, hb ase.hstore.blockingStoreFiles and hbase.hstore.compaction.max?The first two seem very similar in their descri...
   Author: Vidhyashankar Venkatarama..., 2010-06-04, 21:51
Re: ideas to improve throughput of the base writting - HBase - [mail # user]
...Threshold and the number of column families (number of Stores)..  Reaching compactionThreshold would trigger compaction in a Store for a part icular region during which flushes will be disabled (which means...
... no more st ore files for this store until the compaction finishes).. Writes on other S tores in the same region will be happening until each of them reach compact ionThreshold after which...
[+ show more]
   Author: Vidhyashankar Venkatarama..., 2010-06-08, 00:08
Re: Question from HBase book: "HBase currently does not do well with anything about two or three column families" - HBase - [mail # user]
...Is there a JIRA for issuing flushes and compactions on a per column family  basis?   On 6/2/11 2:48 PM, "Stack"  wrote:  On Thu, Jun 2, 2011 at 2:40 PM, Leif Wickland  wrot e:  If you can...
   Author: Vidhyashankar Venkatarama..., 2011-06-02, 21:57
Re: OOME during frequent updates: log - HBase - [mail # user]
....apache.hadoop.hbase.regionserver.HRegion:  compaction completed on region DocData,108596007,1275586906692 in 0sec 2010-06-09 02:25:00,070 INFO org.apache.hadoop.hbase.regionserver.HRegion:  Starting compaction on region DocData,69478571...
....apache.hadoop.hbase.regionserver.Store: S tarted compaction of 2 file(s)  into /hbase/DocData/compaction.dir/14859693 33, seqid=778107 2010-06-09 02:25:00,112 DEBUG org.apache.hadoop.hbase.regionserver.Store: C ompleted compaction...
[+ show more]
   Author: Vidhyashankar Venkatarama..., 2010-06-09, 18:27
Re: OOME during frequent updates... - HBase - [mail # user]
... compactions.. Is this right?     Is it better to have fat regions (I am thinking 8-10 gigs) for a large n umber (100's) of nodes ?  V  On 6/9/10 4:15 PM, "Jean-Daniel Cryans"  wrote:  Mmm yeah wrote...
   Author: Vidhyashankar Venkatarama..., 2010-06-10, 06:29
HBase (21)
mail # user (21)
mail # dev (1)
last 7 days (0)
last 30 days (0)
last 90 days (0)
last 6 months (0)
last 9 months (21)
Jean-Daniel Cryans (58)
Stack (54)
Ted Yu (26)
Jean-Marc Spaggiari (25)
lars hofhansl (19)
Ryan Rawson (15)
Andrew Purtell (12)
Doug Meil (12)
Michael Segel (11)
Vidhyashankar Venkatarama...(10)
yun peng (8)
Alex Baranau (7)
Asaf Mesika (7)
Bryan Beaudreault (7)
Buttler, David (7)