240 lines
8.6 KiB
XML
240 lines
8.6 KiB
XML
<?xml version="1.0"?>
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<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
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<!--
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/**
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* Copyright 2007 The Apache Software Foundation
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*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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-->
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<configuration>
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<property>
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<name>hbase.master</name>
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<value>local</value>
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<description>The host and port that the HBase master runs at.
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A value of 'local' runs the master and a regionserver in
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a single process.
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</description>
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</property>
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<property>
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<name>hbase.master.info.port</name>
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<value>60010</value>
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<description>The port for the hbase master web UI
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Set to -1 if you do not want the info server to run.
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</description>
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</property>
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<property>
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<name>hbase.master.info.bindAddress</name>
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<value>0.0.0.0</value>
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<description>The address for the hbase master web UI
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</description>
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</property>
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<property>
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<name>hbase.regionserver</name>
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<value>0.0.0.0:60020</value>
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<description>The host and port a HBase region server runs at.
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</description>
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</property>
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<property>
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<name>hbase.regionserver.info.port</name>
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<value>60030</value>
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<description>The port for the hbase regionserver web UI
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Set to -1 if you do not want the info server to run.
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</description>
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</property>
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<property>
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<name>hbase.regionserver.info.bindAddress</name>
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<value>0.0.0.0</value>
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<description>The address for the hbase regionserver web UI
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</description>
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</property>
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<property>
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<name>hbase.regionserver.class</name>
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<value>org.apache.hadoop.hbase.HRegionInterface</value>
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<description>An interface that is assignable to HRegionInterface. Used in HClient for
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opening proxy to remote region server.
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</description>
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</property>
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<property>
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<name>hbase.rootdir</name>
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<value>${hadoop.tmp.dir}/hbase</value>
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<description>The directory shared by region servers.
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</description>
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</property>
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<property>
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<name>hbase.client.pause</name>
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<value>10000</value>
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<description>General client pause value. Used mostly as value to wait
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before running a retry of a failed get, region lookup, etc.</description>
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</property>
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<property>
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<name>hbase.client.retries.number</name>
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<value>5</value>
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<description>Maximum retries. Used as maximum for all retryable
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operations such as fetching of the root region from root region
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server, getting a cell's value, starting a row update, etc.
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Default: 5.
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</description>
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</property>
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<property>
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<name>hbase.master.meta.thread.rescanfrequency</name>
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<value>60000</value>
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<description>How long the HMaster sleeps (in milliseconds) between scans of
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the root and meta tables.
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</description>
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</property>
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<property>
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<name>hbase.master.lease.period</name>
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<value>30000</value>
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<description>HMaster server lease period in milliseconds. Default is
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30 seconds. Region servers must report in within this period else
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they are considered dead. On loaded cluster, may need to up this
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period.</description>
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</property>
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<property>
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<name>hbase.regionserver.lease.period</name>
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<value>30000</value>
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<description>HRegion server lease period in milliseconds. Default is
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30 seconds. Clients must report in within this period else they are
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considered dead.</description>
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</property>
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<property>
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<name>hbase.server.thread.wakefrequency</name>
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<value>10000</value>
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<description>Time to sleep in between searches for work (in milliseconds).
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Used as sleep interval by service threads such as META scanner and log roller.
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</description>
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</property>
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<property>
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<name>hbase.regionserver.handler.count</name>
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<value>10</value>
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<description>Count of RPC Server instances spun up on RegionServers
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Same property is used by the HMaster for count of master handlers.
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Default is 10.
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</description>
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</property>
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<property>
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<name>hbase.regionserver.msginterval</name>
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<value>3000</value>
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<description>Interval between messages from the RegionServer to HMaster
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in milliseconds. Default is 15. Set this value low if you want unit
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tests to be responsive.
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</description>
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</property>
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<property>
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<name>hbase.regionserver.maxlogentries</name>
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<value>30000</value>
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<description>Rotate the HRegion HLogs when count of entries exceeds this
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value. Default: 30,000. Value is checked by a thread that runs every
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hbase.server.thread.wakefrequency.
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</description>
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</property>
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<property>
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<name>hbase.regionserver.optionalcacheflushinterval</name>
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<value>1800000</value>
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<description>
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Amount of time to wait since the last time a region was flushed before
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invoking an optional cache flush (An optional cache flush is a
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flush even though memcache is not at the memcache.flush.size).
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Default: 30 minutes (in miliseconds)
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</description>
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</property>
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<property>
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<name>hbase.hregion.memcache.flush.size</name>
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<value>67108864</value>
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<description>
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A HRegion memcache will be flushed to disk if size of the memcache
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exceeds this number of bytes. Value is checked by a thread that runs
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every hbase.server.thread.wakefrequency.
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</description>
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</property>
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<property>
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<name>hbase.hregion.memcache.block.multiplier</name>
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<value>1</value>
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<description>
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Block updates if memcache has hbase.hregion.block.memcache
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time hbase.hregion.flush.size bytes. Useful preventing
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runaway memcache during spikes in update traffic. Without an
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upper-bound, memcache fills such that when it flushes the
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resultant flush files take a long time to compact or split, or
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worse, we OOME.
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</description>
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</property>
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<property>
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<name>hbase.hregion.max.filesize</name>
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<value>268435456</value>
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<description>
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Maximum HStoreFile size. If any one of a column families' HStoreFiles has
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grown to exceed this value, the hosting HRegion is split in two.
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Default: 256M.
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</description>
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</property>
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<property>
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<name>hbase.hstore.compactionThreshold</name>
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<value>3</value>
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<description>
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If more than this number of HStoreFiles in any one HStore
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(one HStoreFile is written per flush of memcache) then a compaction
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is run to rewrite all HStoreFiles files as one. Larger numbers
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put off compaction but when it runs, it takes longer to complete.
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During a compaction, updates cannot be flushed to disk. Long
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compactions require memory sufficient to carry the logging of
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all updates across the duration of the compaction.
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If too large, clients timeout during compaction.
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</description>
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</property>
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<property>
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<name>hbase.regionserver.thread.splitcompactcheckfrequency</name>
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<value>20000</value>
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<description>How often a region server runs the split/compaction check.
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</description>
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</property>
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<property>
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<name>hbase.io.index.interval</name>
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<value>32</value>
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<description>The interval at which we record offsets in hbase
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store files/mapfiles. Default for stock mapfiles is 128. Index
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files are read into memory. If there are many of them, could prove
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a burden. If so play with the hadoop io.map.index.skip property and
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skip every nth index member when reading back the index into memory.
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</description>
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</property>
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<property>
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<name>hbase.io.seqfile.compression.type</name>
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<value>NONE</value>
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<description>The compression type for hbase sequencefile.Writers
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such as hlog.
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</description>
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</property>
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<!-- HbaseShell Configurations -->
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<property>
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<name>hbaseshell.jline.bell.enabled</name>
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<value>true</value>
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<description>
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if true, enable audible keyboard bells if an alert is required.
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</description>
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</property>
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<property>
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<name>hbaseshell.formatter</name>
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<value>org.apache.hadoop.hbase.hql.formatter.AsciiTableFormatter</value>
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<description>TableFormatter to use outputting HQL result sets.
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</description>
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</property>
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</configuration>
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