https://community.cloudera.com/t5/Archives-of-Support-Questions/hbase-bucketcache-size-increase-from-2G-to-4G-cause/m-p/95124#M8460 <P>Make sure that you have configured -XX:MaxDirectMemorySize correctly. </P> Fri, 09 Oct 2015 05:31:25 GMT Enis 2015-10-09T05:31:25Z https://community.cloudera.com/t5/Archives-of-Support-Questions/hbase-bucketcache-size-increase-from-2G-to-4G-cause/m-p/95123#M8459 <P>It is a dedicated HBase cluster, each node has 128GB RAM. It is HDP 2.3 and we follow HBase optimizing IO instruction: <A href="http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.3.2/bk_Sys_Admin_Guides/content/ref-db219cd6-c586-49c1-bc56-c9c1c5475276.1.html" target="_blank">http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.3.2/bk_Sys_Admin_Guides/content/ref-db219cd6-c586-49c1-bc56-c9c1c5475276.1.html</A></P> Fri, 09 Oct 2015 04:00:38 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/hbase-bucketcache-size-increase-from-2G-to-4G-cause/m-p/95123#M8459 rxu 2015-10-09T04:00:38Z https://community.cloudera.com/t5/Archives-of-Support-Questions/hbase-bucketcache-size-increase-from-2G-to-4G-cause/m-p/95124#M8460 <P>Make sure that you have configured -XX:MaxDirectMemorySize correctly. </P> Fri, 09 Oct 2015 05:31:25 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/hbase-bucketcache-size-increase-from-2G-to-4G-cause/m-p/95124#M8460 Enis 2015-10-09T05:31:25Z