IncreasingToUpperBoundRegionSplitPolicy is the default split policy. You can read the javadoc of this class to see how it works.
Cheers On Wed, Nov 5, 2014 at 9:39 PM, Ted Yu <yuzhih...@gmail.com> wrote: > Can you provide a bit more information (such as HBase release) ? > > If you pastebin one of the region servers' log, that would help us > determine the cause. > > Cheers > > > On Wed, Nov 5, 2014 at 9:29 PM, Pere Kyle <p...@whisper.sh> wrote: > >> Hello, >> >> Recently our cluster which has been running fine for 2 weeks split to >> 1024 regions at 1GB per region, after this split the cluster is unusable. >> Using the performance benchmark I was getting a little better than 100 w/s, >> whereas before it was 5000 w/s. There are 15 nodes of m2.2xlarge with 8GB >> heap reserved for Hbase >> >> Any Ideas? I am stumped: >> >> Thanks, >> Pere >> >> Here is the current >> hbase-site.xml >> <?xml version="1.0"?> >> <?xml-stylesheet type="text/xsl" href="configuration.xsl"?> >> <configuration> >> <property> >> <name>hbase.snapshot.enabled</name> >> <value>true</value> >> </property> >> >> <property><name>fs.hdfs.impl</name><value>emr.hbase.fs.BlockableFileSystem</value></property> >> >> <property><name>hbase.regionserver.handler.count</name><value>50</value></property> >> >> <property><name>hbase.cluster.distributed</name><value>true</value></property> >> >> <property><name>hbase.tmp.dir</name><value>/mnt/var/lib/hbase/tmp-data</value></property> >> >> <property><name>hbase.master.wait.for.log.splitting</name><value>true</value></property> >> >> <property><name>hbase.hregion.memstore.flush.size</name><value>134217728</value></property> >> <property><name>hbase.hregion.max.filesize</name><value>5073741824 >> </value></property> >> >> <property><name>zookeeper.session.timeout</name><value>60000</value></property> >> >> <property><name>hbase.thrift.maxQueuedRequests</name><value>0</value></property> >> >> <property><name>hbase.client.scanner.caching</name><value>1000</value></property> >> >> <property><name>hbase.hregion.memstore.block.multiplier</name><value>4</value></property> >> </configuration> >> >> hbase-env.sh >> # The maximum amount of heap to use, in MB. Default is 1000. >> export HBASE_HEAPSIZE=8000 >> >> # Extra Java runtime options. >> # Below are what we set by default. May only work with SUN JVM. >> # For more on why as well as other possible settings, >> # see http://wiki.apache.org/hadoop/PerformanceTuning >> export HBASE_OPTS="-XX:+UseConcMarkSweepGC” >> >> hbase-env.sh > > >
