92 lines
3.1 KiB
Ruby
92 lines
3.1 KiB
Ruby
#
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# Copyright 2011 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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# This script must be used on a live cluster in order to fix .META.'s
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# MEMSTORE_SIZE back to 64MB instead of the 16KB that was configured
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# in 0.20 era. This is only required if .META. was created at that time.
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#
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# After running this script, HBase needs to be restarted.
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#
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# To see usage for this script, run:
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#
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# ${HBASE_HOME}/bin/hbase org.jruby.Main set_meta_memstore_size.rb
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#
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include Java
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import org.apache.hadoop.hbase.util.Bytes
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import org.apache.hadoop.hbase.HConstants
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import org.apache.hadoop.hbase.HRegionInfo
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import org.apache.hadoop.hbase.client.HTable
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import org.apache.hadoop.hbase.client.Delete
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import org.apache.hadoop.hbase.client.Put
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import org.apache.hadoop.hbase.client.Scan
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import org.apache.hadoop.hbase.HTableDescriptor
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import org.apache.hadoop.hbase.HBaseConfiguration
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import org.apache.hadoop.hbase.util.FSUtils
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import org.apache.hadoop.hbase.util.Writables
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import org.apache.hadoop.fs.Path
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import org.apache.hadoop.fs.FileSystem
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import org.apache.commons.logging.LogFactory
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# Name of this script
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NAME = "set_meta_memstore_size.rb"
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# Print usage for this script
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def usage
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puts 'Usage: %s.rb]' % NAME
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exit!
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end
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# Get configuration to use.
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c = HBaseConfiguration.create()
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# Set hadoop filesystem configuration using the hbase.rootdir.
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# Otherwise, we'll always use localhost though the hbase.rootdir
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# might be pointing at hdfs location.
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c.set("fs.default.name", c.get(HConstants::HBASE_DIR))
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fs = FileSystem.get(c)
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# Get a logger and a metautils instance.
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LOG = LogFactory.getLog(NAME)
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# Check arguments
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if ARGV.size > 0
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usage
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end
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# Clean mentions of table from .META.
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# Scan the .META. and remove all lines that begin with tablename
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metaTable = HTable.new(c, HConstants::ROOT_TABLE_NAME)
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scan = Scan.new()
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scan.addColumn(HConstants::CATALOG_FAMILY, HConstants::REGIONINFO_QUALIFIER);
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scanner = metaTable.getScanner(scan)
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while (result = scanner.next())
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rowid = Bytes.toString(result.getRow())
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LOG.info("Settting memstore to 64MB on : " + rowid);
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hriValue = result.getValue(HConstants::CATALOG_FAMILY, HConstants::REGIONINFO_QUALIFIER)
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hri = Writables.getHRegionInfo(hriValue)
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htd = hri.getTableDesc()
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htd.setMemStoreFlushSize(64 * 1024 * 1024)
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p = Put.new(result.getRow())
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p.add(HConstants::CATALOG_FAMILY, HConstants::REGIONINFO_QUALIFIER, Writables.getBytes(hri));
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metaTable.put(p)
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end
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scanner.close()
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