/**
* Copyright 2008 The Apache Software Foundation
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.master;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.TableNotDisabledException;
import org.apache.hadoop.hbase.ipc.HRegionInterface;
import org.apache.hadoop.hbase.io.BatchUpdate;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.Writables;
/** Instantiated to modify table descriptor metadata */
class ModifyTableMeta extends TableOperation {
private static Log LOG = LogFactory.getLog(ModifyTableMeta.class);
private HTableDescriptor desc;
ModifyTableMeta(final HMaster master, final byte [] tableName,
HTableDescriptor desc)
throws IOException {
super(master, tableName);
this.desc = desc;
LOG.debug("modifying " + Bytes.toString(tableName) + ": " +
desc.toString());
}
protected void updateRegionInfo(HRegionInterface server, byte [] regionName,
HRegionInfo i)
throws IOException {
BatchUpdate b = new BatchUpdate(i.getRegionName());
b.put(COL_REGIONINFO, Writables.getBytes(i));
server.batchUpdate(regionName, b, -1L);
LOG.debug("updated HTableDescriptor for region " + i.getRegionNameAsString());
}
@Override
protected void processScanItem(
@SuppressWarnings("unused") String serverName,
@SuppressWarnings("unused") long startCode, final HRegionInfo info)
throws IOException {
if (isEnabled(info)) {
throw new TableNotDisabledException(tableName.toString());
}
}
@Override
protected void postProcessMeta(MetaRegion m, HRegionInterface server)
throws IOException {
for (HRegionInfo i: unservedRegions) {
i.setTableDesc(desc);
updateRegionInfo(server, m.getRegionName(), i);
}
// kick off a meta scan right away
master.regionManager.metaScannerThread.interrupt();
}
}