If you never use the memstore, you do not need to reduce its size. Memory for the memstore isn't allocated unless you use it.
Also the formula is Min( R^3 * 2 * "hbase.hregion.memstore.flush.size”, “hbase.hregion.max.filesize”) now :) ________________________________ From: Ozhan Gulen <[email protected]> To: [email protected] Sent: Sunday, August 3, 2014 2:18 AM Subject: hbase memstore size 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
