Hi Kevin, We guess that, on region server start up, hbase gets some memory for each memstore. So we want to decrease this value. You are saying that memstore size doesnt matter. If memstore flush size 128 mb, does java take some memory for each memstore on region startup. Or it only takes memory while you are using it to insert data. Thanks a lot 3 Ağu 2014 21:27 tarihinde "Kevin O'dell [via Apache HBase]" < [email protected]> yazdı:
> Hi Ozhang, > > If you are only bulk loading into HBase, then memstore flush size should > not matter. You most likely you looking to lower the upper/global memstore > limits. > On Aug 3, 2014 2:23 PM, "ozhang" <[hidden email] > <http://user/SendEmail.jtp?type=node&node=4062260&i=0>> wrote: > > > Hello, > > In our hbase cluster memstore flush size is 128 mb. And to insert data > to > > tables, we only use bulk load tool. Since bulk loading bypasses > memstores, > > they are never used, so we want to minimize memstore flush size. But > > memstore flush size is used in many important calculations in hbase such > > that; > > > > region split size = Min (R^2 * “hbase.hregion.memstore.flush.size”, > > “hbase.hregion.max.filesize”) > > > > So setting memstore value smaller or "0" for example, results in some > > other > > problems. > > What do you suggest us in that case. Setting memstore size to 128 holds > > some > > memory for tens of regions in region server and we want to get rid of > it. > > Thanks a lot. > > > > ozhan > > > > > > > > -- > > View this message in context: > > > http://apache-hbase.679495.n3.nabble.com/hbase-set-memstore-size-to-0-tp4062257.html > > Sent from the HBase User mailing list archive at Nabble.com. > > > > > ------------------------------ > If you reply to this email, your message will be added to the discussion > below: > > http://apache-hbase.679495.n3.nabble.com/hbase-set-memstore-size-to-0-tp4062257p4062260.html > To unsubscribe from hbase set memstore size to 0, click here > <http://apache-hbase.679495.n3.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=4062257&code=b3poYW5ndWxlbkBnbWFpbC5jb218NDA2MjI1N3wxMDY0OTA3MTE4> > . > NAML > <http://apache-hbase.679495.n3.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> > -- View this message in context: http://apache-hbase.679495.n3.nabble.com/hbase-set-memstore-size-to-0-tp4062257p4062261.html Sent from the HBase User mailing list archive at Nabble.com.
