Hi J-D I am doing some benchmark using ycsb and the log entries retrieved were during the data loading stage. So i don't think there is and data deleted and also overwriting.
Aiyoh79 Jean-Daniel Cryans wrote > On flushing we do some cleanup, like removing deleted data that was > already > in the MemStore or extra versions. Could it be that you are overwriting > recently written data? > > 48MB is the size of the Memstore that accumulated while the flushing > happened. > > J-D > > > On Tue, Sep 24, 2013 at 3:50 AM, aiyoh79 < > tchengwee@ > > wrote: > >> Hi, >> >> I am using hbase 0.94.11 and i feel a bit confuse when looking at the log >> file below: >> >> 13/09/24 13:11:00 INFO regionserver.Store: Flushed , sequenceid=687077, >> memsize= >> 122.1m, into tmp file >> hdfs://192.168.123.123:54310/hbase/usertable/b19289cf9b1400 >> c6daddc347337bac03/.tmp/13f0d91efe784372a796585a6c1e05d3 >> 13/09/24 13:11:00 INFO regionserver.Store: Added >> hdfs://192.168.123.123:54310/hba >> >> se/usertable/b19289cf9b1400c6daddc347337bac03/family/13f0d91efe784372a796585a6c1 >> e05d3, entries=432620, sequenceid=687077, filesize=64.4m >> 13/09/24 13:11:00 INFO regionserver.HRegion: Finished memstore flush of >> ~128.2m/ >> 134402240, currentsize=48.0m/50366240 for region >> usertable,user4\xB4\xB0,1379998 >> 895119.b19289cf9b1400c6daddc347337bac03. in 1163ms, sequenceid=687077, >> compactio >> n requested=false >> >> It seems like it will first flush into a tmp file and the memsize is >> 122.1m, >> but when it finally added, the size is 64.4m. Lastly, there are 2 more >> parameters which is 128.2m and 48.0m for currentsize. >> >> I never specify hbase.regionserver.codecs preperty in my hbase-site.xml >> file, so is the size difference still because of compression? >> >> Thanks, >> >> aiyoh79 >> >> >> >> -- >> View this message in context: >> http://apache-hbase.679495.n3.nabble.com/Hbase-Compression-tp4051122.html >> Sent from the HBase User mailing list archive at Nabble.com. >> -- View this message in context: http://apache-hbase.679495.n3.nabble.com/Hbase-Compression-tp4051122p4051187.html Sent from the HBase User mailing list archive at Nabble.com.
