Hello Mikael, I think disabling the major compaction in the timed and client-issued situation is not a problem. The problem is the size-based. From the mailing list, it only talks about the situation of minor compaction not major compaction, if I understand right. So, I want to know if someone can tell me how to close the major compaction in size-based situation.
Thanks Yong I saw the description which indicating the size of store file can also trigger major compaction. On Thu, Jan 26, 2012 at 3:54 PM, Mikael Sitruk <mikael.sit...@gmail.com> wrote: > Yong hi > > As far as i know setting hbase.hregion.majorcompaction to 0 will disable > the time based trigger only. > Client are always able to invoke the major compact, no matter what is the > value of the hbase.hregion.majorcompaction. > > Perhaps client invocation of compaction can me disabled with the security > package. > > Anyway i'm digging into 0.92, I hope to get those insight soon. > > Mikael.S > > On Thu, Jan 26, 2012 at 4:39 PM, yonghu <yongyong...@gmail.com> wrote: > >> Thanks for your response. >> >> I knew that major compact can be triggered based on client, time and >> size. In my situation, I have to close the functionality of major >> compact. So, if I set the ‘hbase.hregion.majorcompaction’ into 0, it >> will close all the three situations or I have to set it separately for >> each case. BTW, my hbase version is 0.92. >> >> Thanks! >> >> Yong >> >> On Thu, Jan 26, 2012 at 3:09 PM, Mikael Sitruk <mikael.sit...@gmail.com> >> wrote: >> > look at the thread http://search-hadoop.com/m/GHUWQ1xnbj21, it explain a >> > lot on major compaction and enhancement over versions >> > >> > Mikael.S >> > >> > >> > On Thu, Jan 26, 2012 at 3:51 PM, Damien Hardy <dha...@figarocms.fr> >> wrote: >> > >> >> Le 26/01/2012 14:43, yonghu a écrit : >> >> > Hello, >> >> > >> >> > I read this blog http://outerthought.org/blog/465-ot.html. It >> mentions >> >> > that every 24 hours the major compaction will occur. My question is >> >> > that if there are any other conditions which can trigger major >> >> > compaction happening? For example, when the size of store file reaches >> >> > the threshold (I think this will cause minor compaction or region file >> >> > split, not major compaction, but not quite sure). >> >> > >> >> > Thanks! >> >> > >> >> > Yong >> >> >> >> Hello, >> >> I think when there is massive delete on the table or change table >> >> attribute like TTL (that is susseptible of remove a lot of >> >> versions/rows) or COMPRESSION wich gain a lot of disk space on each >> region. >> >> >> >> Cheers, >> >> >> >> -- >> >> Damien >> >> >> >> >> > >> > >> > -- >> > Mikael.S >> > > > > -- > Mikael.S
