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