HBASE-13536 Cleanup the handlers that are no longer being used.
This commit is contained in:
Srikanth Srungarapu
parent
e09b28941f
commit
b5fb861f76
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@ -1,225 +0,0 @@
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/**
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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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package org.apache.hadoop.hbase.master.handler;
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import java.io.IOException;
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import java.io.InterruptedIOException;
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import java.util.ArrayList;
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import java.util.List;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.hadoop.fs.FileSystem;
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import org.apache.hadoop.fs.Path;
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import org.apache.hadoop.hbase.CoordinatedStateException;
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import org.apache.hadoop.hbase.HRegionInfo;
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import org.apache.hadoop.hbase.HTableDescriptor;
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import org.apache.hadoop.hbase.MetaTableAccessor;
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import org.apache.hadoop.hbase.Server;
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import org.apache.hadoop.hbase.TableName;
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import org.apache.hadoop.hbase.backup.HFileArchiver;
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import org.apache.hadoop.hbase.classification.InterfaceAudience;
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import org.apache.hadoop.hbase.client.ClusterConnection;
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import org.apache.hadoop.hbase.client.Delete;
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import org.apache.hadoop.hbase.client.Result;
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import org.apache.hadoop.hbase.client.ResultScanner;
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import org.apache.hadoop.hbase.client.Scan;
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import org.apache.hadoop.hbase.client.Table;
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import org.apache.hadoop.hbase.executor.EventType;
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import org.apache.hadoop.hbase.master.AssignmentManager;
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import org.apache.hadoop.hbase.master.HMaster;
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import org.apache.hadoop.hbase.master.MasterCoprocessorHost;
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import org.apache.hadoop.hbase.master.MasterFileSystem;
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import org.apache.hadoop.hbase.master.MasterServices;
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import org.apache.hadoop.hbase.master.RegionState.State;
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import org.apache.hadoop.hbase.master.RegionStates;
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import org.apache.hadoop.hbase.regionserver.HRegion;
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@InterfaceAudience.Private
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public class DeleteTableHandler extends TableEventHandler {
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private static final Log LOG = LogFactory.getLog(DeleteTableHandler.class);
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protected HTableDescriptor hTableDescriptor = null;
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public DeleteTableHandler(TableName tableName, Server server,
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final MasterServices masterServices) {
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super(EventType.C_M_DELETE_TABLE, tableName, server, masterServices);
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}
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@Override
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protected void prepareWithTableLock() throws IOException {
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// The next call fails if no such table.
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hTableDescriptor = getTableDescriptor().getHTableDescriptor();
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}
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protected void waitRegionInTransition(final List<HRegionInfo> regions)
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throws IOException, CoordinatedStateException {
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AssignmentManager am = this.masterServices.getAssignmentManager();
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RegionStates states = am.getRegionStates();
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long waitTime = server.getConfiguration().
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getLong("hbase.master.wait.on.region", 5 * 60 * 1000);
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for (HRegionInfo region : regions) {
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long done = System.currentTimeMillis() + waitTime;
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while (System.currentTimeMillis() < done) {
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if (states.isRegionInState(region, State.FAILED_OPEN)) {
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am.regionOffline(region);
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}
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if (!states.isRegionInTransition(region)) break;
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try {
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Thread.sleep(waitingTimeForEvents);
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} catch (InterruptedException e) {
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LOG.warn("Interrupted while sleeping");
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throw (InterruptedIOException)new InterruptedIOException().initCause(e);
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}
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LOG.debug("Waiting on region to clear regions in transition; "
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+ am.getRegionStates().getRegionTransitionState(region));
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}
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if (states.isRegionInTransition(region)) {
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throw new IOException("Waited hbase.master.wait.on.region (" +
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waitTime + "ms) for region to leave region " +
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region.getRegionNameAsString() + " in transitions");
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}
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}
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}
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@Override
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protected void handleTableOperation(List<HRegionInfo> regions)
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throws IOException, CoordinatedStateException {
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MasterCoprocessorHost cpHost = ((HMaster) this.server).getMasterCoprocessorHost();
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if (cpHost != null) {
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cpHost.preDeleteTableHandler(this.tableName);
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}
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// 1. Wait because of region in transition
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waitRegionInTransition(regions);
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// 2. Remove table from hbase:meta and HDFS
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removeTableData(regions);
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if (cpHost != null) {
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cpHost.postDeleteTableHandler(this.tableName);
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}
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((HMaster) this.server).getMasterQuotaManager().removeTableFromNamespaceQuota(tableName);
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}
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private void cleanupTableState() throws IOException {
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// 3. Update table descriptor cache
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LOG.debug("Removing '" + tableName + "' descriptor.");
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this.masterServices.getTableDescriptors().remove(tableName);
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AssignmentManager am = this.masterServices.getAssignmentManager();
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// 4. Clean up regions of the table in RegionStates.
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LOG.debug("Removing '" + tableName + "' from region states.");
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am.getRegionStates().tableDeleted(tableName);
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// 5.Clean any remaining rows for this table.
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cleanAnyRemainingRows();
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// 6. If entry for this table states, remove it.
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LOG.debug("Marking '" + tableName + "' as deleted.");
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am.getTableStateManager().setDeletedTable(tableName);
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}
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/**
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* There may be items for this table still up in hbase:meta in the case where the
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* info:regioninfo column was empty because of some write error. Remove ALL rows from hbase:meta
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* that have to do with this table. See HBASE-12980.
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* @throws IOException
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*/
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private void cleanAnyRemainingRows() throws IOException {
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ClusterConnection connection = this.masterServices.getConnection();
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Scan tableScan = MetaTableAccessor.getScanForTableName(connection, tableName);
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try (Table metaTable =
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connection.getTable(TableName.META_TABLE_NAME)) {
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List<Delete> deletes = new ArrayList<Delete>();
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try (ResultScanner resScanner = metaTable.getScanner(tableScan)) {
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for (Result result : resScanner) {
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deletes.add(new Delete(result.getRow()));
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}
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}
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if (!deletes.isEmpty()) {
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LOG.warn("Deleting some vestigal " + deletes.size() + " rows of " + this.tableName +
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" from " + TableName.META_TABLE_NAME);
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if (LOG.isDebugEnabled()) {
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for (Delete d: deletes) LOG.debug("Purging " + d);
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}
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metaTable.delete(deletes);
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}
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}
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}
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/**
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* Removes the table from hbase:meta and archives the HDFS files.
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*/
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protected void removeTableData(final List<HRegionInfo> regions)
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throws IOException, CoordinatedStateException {
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try {
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// 1. Remove regions from META
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LOG.debug("Deleting regions from META");
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MetaTableAccessor.deleteRegions(this.server.getConnection(), regions);
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// -----------------------------------------------------------------------
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// NOTE: At this point we still have data on disk, but nothing in hbase:meta
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// if the rename below fails, hbck will report an inconsistency.
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// -----------------------------------------------------------------------
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// 2. Move the table in /hbase/.tmp
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MasterFileSystem mfs = this.masterServices.getMasterFileSystem();
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Path tempTableDir = mfs.moveTableToTemp(tableName);
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// 3. Archive regions from FS (temp directory)
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FileSystem fs = mfs.getFileSystem();
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for (HRegionInfo hri : regions) {
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LOG.debug("Archiving region " + hri.getRegionNameAsString() + " from FS");
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HFileArchiver.archiveRegion(fs, mfs.getRootDir(),
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tempTableDir, HRegion.getRegionDir(tempTableDir, hri.getEncodedName()));
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}
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// 4. Delete table directory from FS (temp directory)
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if (!fs.delete(tempTableDir, true)) {
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LOG.error("Couldn't delete " + tempTableDir);
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}
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LOG.debug("Table '" + tableName + "' archived!");
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} finally {
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cleanupTableState();
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}
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}
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@Override
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protected void releaseTableLock() {
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super.releaseTableLock();
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try {
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masterServices.getTableLockManager().tableDeleted(tableName);
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} catch (IOException ex) {
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LOG.warn("Received exception from TableLockManager.tableDeleted:", ex); //not critical
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}
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}
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@Override
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public String toString() {
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String name = "UnknownServerName";
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if(server != null && server.getServerName() != null) {
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name = server.getServerName().toString();
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}
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return getClass().getSimpleName() + "-" + name + "-" + getSeqid() + "-" + tableName;
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}
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}
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@ -1,149 +0,0 @@
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/**
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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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package org.apache.hadoop.hbase.master.handler;
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import java.io.IOException;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Set;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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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.HTableDescriptor;
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import org.apache.hadoop.hbase.MetaTableAccessor;
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import org.apache.hadoop.hbase.Server;
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import org.apache.hadoop.hbase.TableName;
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import org.apache.hadoop.hbase.classification.InterfaceAudience;
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import org.apache.hadoop.hbase.client.Connection;
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import org.apache.hadoop.hbase.client.Result;
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import org.apache.hadoop.hbase.client.ResultScanner;
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import org.apache.hadoop.hbase.client.Scan;
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import org.apache.hadoop.hbase.client.Table;
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import org.apache.hadoop.hbase.client.TableState;
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import org.apache.hadoop.hbase.executor.EventType;
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import org.apache.hadoop.hbase.master.HMaster;
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import org.apache.hadoop.hbase.master.MasterCoprocessorHost;
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import org.apache.hadoop.hbase.master.MasterFileSystem;
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import org.apache.hadoop.hbase.master.MasterServices;
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import org.apache.hadoop.hbase.util.Bytes;
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import org.apache.hadoop.hbase.util.ServerRegionReplicaUtil;
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@InterfaceAudience.Private
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public class ModifyTableHandler extends TableEventHandler {
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private static final Log LOG = LogFactory.getLog(ModifyTableHandler.class);
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private final HTableDescriptor htd;
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public ModifyTableHandler(final TableName tableName,
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final HTableDescriptor htd, final Server server,
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final MasterServices masterServices) {
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super(EventType.C_M_MODIFY_TABLE, tableName, server, masterServices);
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// This is the new schema we are going to write out as this modification.
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this.htd = htd;
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}
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@Override
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protected void prepareWithTableLock() throws IOException {
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super.prepareWithTableLock();
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// Check operation is possible on the table in its current state
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// Also checks whether the table exists
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if (masterServices.getAssignmentManager().getTableStateManager()
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.isTableState(this.htd.getTableName(), TableState.State.ENABLED)
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&& this.htd.getRegionReplication() != getTableDescriptor()
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.getHTableDescriptor().getRegionReplication()) {
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throw new IOException("REGION_REPLICATION change is not supported for enabled tables");
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}
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}
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@Override
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protected void handleTableOperation(List<HRegionInfo> hris)
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throws IOException {
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MasterCoprocessorHost cpHost = ((HMaster) this.server).getMasterCoprocessorHost();
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if (cpHost != null) {
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cpHost.preModifyTableHandler(this.tableName, this.htd);
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}
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// Update descriptor
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HTableDescriptor oldDescriptor =
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this.masterServices.getTableDescriptors().get(this.tableName);
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this.masterServices.getTableDescriptors().add(htd);
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deleteFamilyFromFS(hris, oldDescriptor.getFamiliesKeys());
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removeReplicaColumnsIfNeeded(
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this.htd.getRegionReplication(),
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oldDescriptor.getRegionReplication(),
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this.htd.getTableName());
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// Setup replication for region replicas if needed
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if (htd.getRegionReplication() > 1 && oldDescriptor.getRegionReplication() <= 1) {
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ServerRegionReplicaUtil.setupRegionReplicaReplication(server.getConfiguration());
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}
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if (cpHost != null) {
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cpHost.postModifyTableHandler(this.tableName, this.htd);
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}
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}
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private void removeReplicaColumnsIfNeeded(int newReplicaCount, int oldReplicaCount,
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TableName table) throws IOException {
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if (newReplicaCount >= oldReplicaCount) return;
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Set<byte[]> tableRows = new HashSet<byte[]>();
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Connection connection = this.masterServices.getConnection();
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Scan scan = MetaTableAccessor.getScanForTableName(connection, table);
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scan.addColumn(HConstants.CATALOG_FAMILY, HConstants.REGIONINFO_QUALIFIER);
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try (Table metaTable = connection.getTable(TableName.META_TABLE_NAME)) {
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ResultScanner resScanner = metaTable.getScanner(scan);
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for (Result result : resScanner) {
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tableRows.add(result.getRow());
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}
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MetaTableAccessor.removeRegionReplicasFromMeta(tableRows, newReplicaCount,
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oldReplicaCount - newReplicaCount, masterServices.getConnection());
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}
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}
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/**
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* Removes from hdfs the families that are not longer present in the new table descriptor.
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*/
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private void deleteFamilyFromFS(final List<HRegionInfo> hris, final Set<byte[]> oldFamilies) {
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try {
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Set<byte[]> newFamilies = this.htd.getFamiliesKeys();
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MasterFileSystem mfs = this.masterServices.getMasterFileSystem();
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for (byte[] familyName: oldFamilies) {
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if (!newFamilies.contains(familyName)) {
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LOG.debug("Removing family=" + Bytes.toString(familyName) +
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" from table=" + this.tableName);
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for (HRegionInfo hri: hris) {
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// Delete the family directory in FS for all the regions one by one
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mfs.deleteFamilyFromFS(hri, familyName);
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}
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}
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}
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} catch (IOException e) {
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LOG.warn("Unable to remove on-disk directories for the removed families", e);
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}
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}
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@Override
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public String toString() {
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String name = "UnknownServerName";
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if(server != null && server.getServerName() != null) {
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name = server.getServerName().toString();
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}
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return getClass().getSimpleName() + "-" + name + "-" + getSeqid() + "-" +
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tableName;
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}
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}
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@ -1,89 +0,0 @@
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/**
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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
|
||||
* 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.
|
||||
*/
|
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package org.apache.hadoop.hbase.master.handler;
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import java.io.IOException;
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import java.util.List;
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import org.apache.hadoop.hbase.classification.InterfaceAudience;
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import org.apache.hadoop.hbase.TableDescriptor;
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import org.apache.hadoop.hbase.TableName;
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import org.apache.hadoop.hbase.HColumnDescriptor;
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import org.apache.hadoop.hbase.HRegionInfo;
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import org.apache.hadoop.hbase.InvalidFamilyOperationException;
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import org.apache.hadoop.hbase.Server;
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import org.apache.hadoop.hbase.executor.EventType;
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import org.apache.hadoop.hbase.master.HMaster;
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import org.apache.hadoop.hbase.master.MasterCoprocessorHost;
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import org.apache.hadoop.hbase.master.MasterServices;
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/**
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* Handles adding a new family to an existing table.
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*/
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@InterfaceAudience.Private
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public class TableAddFamilyHandler extends TableEventHandler {
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private final HColumnDescriptor familyDesc;
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public TableAddFamilyHandler(TableName tableName, HColumnDescriptor familyDesc,
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Server server, final MasterServices masterServices) {
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super(EventType.C_M_ADD_FAMILY, tableName, server, masterServices);
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this.familyDesc = familyDesc;
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}
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@Override
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protected void prepareWithTableLock() throws IOException {
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super.prepareWithTableLock();
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TableDescriptor htd = getTableDescriptor();
|
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if (htd.getHTableDescriptor().hasFamily(familyDesc.getName())) {
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throw new InvalidFamilyOperationException("Family '" +
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familyDesc.getNameAsString() + "' already exists so cannot be added");
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}
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}
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@Override
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protected void handleTableOperation(List<HRegionInfo> hris)
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throws IOException {
|
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MasterCoprocessorHost cpHost = ((HMaster) this.server)
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.getMasterCoprocessorHost();
|
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if(cpHost != null){
|
||||
cpHost.preAddColumnHandler(this.tableName, this.familyDesc);
|
||||
}
|
||||
// Update table descriptor
|
||||
this.masterServices.getMasterFileSystem().addColumn(tableName, familyDesc);
|
||||
if(cpHost != null){
|
||||
cpHost.postAddColumnHandler(this.tableName, this.familyDesc);
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
public String toString() {
|
||||
String name = "UnknownServerName";
|
||||
if(server != null && server.getServerName() != null) {
|
||||
name = server.getServerName().toString();
|
||||
}
|
||||
String family = "UnknownFamily";
|
||||
if(familyDesc != null) {
|
||||
family = familyDesc.getNameAsString();
|
||||
}
|
||||
return getClass().getSimpleName() + "-" + name + "-" +
|
||||
getSeqid() + "-" + tableName + "-" + family;
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -1,90 +0,0 @@
|
|||
/**
|
||||
*
|
||||
* 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.handler;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.util.List;
|
||||
|
||||
import org.apache.hadoop.hbase.HRegionInfo;
|
||||
import org.apache.hadoop.hbase.HTableDescriptor;
|
||||
import org.apache.hadoop.hbase.Server;
|
||||
import org.apache.hadoop.hbase.TableName;
|
||||
import org.apache.hadoop.hbase.classification.InterfaceAudience;
|
||||
import org.apache.hadoop.hbase.executor.EventType;
|
||||
import org.apache.hadoop.hbase.master.HMaster;
|
||||
import org.apache.hadoop.hbase.master.MasterCoprocessorHost;
|
||||
import org.apache.hadoop.hbase.master.MasterFileSystem;
|
||||
import org.apache.hadoop.hbase.master.MasterServices;
|
||||
import org.apache.hadoop.hbase.util.Bytes;
|
||||
|
||||
/**
|
||||
* Handles Deleting a column family from an existing table.
|
||||
*/
|
||||
@InterfaceAudience.Private
|
||||
public class TableDeleteFamilyHandler extends TableEventHandler {
|
||||
|
||||
private byte [] familyName;
|
||||
|
||||
public TableDeleteFamilyHandler(TableName tableName, byte [] familyName,
|
||||
Server server, final MasterServices masterServices) throws IOException {
|
||||
super(EventType.C_M_DELETE_FAMILY, tableName, server, masterServices);
|
||||
this.familyName = familyName;
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void prepareWithTableLock() throws IOException {
|
||||
super.prepareWithTableLock();
|
||||
HTableDescriptor htd = getTableDescriptor().getHTableDescriptor();
|
||||
this.familyName = hasColumnFamily(htd, familyName);
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void handleTableOperation(List<HRegionInfo> hris) throws IOException {
|
||||
MasterCoprocessorHost cpHost = ((HMaster) this.server)
|
||||
.getMasterCoprocessorHost();
|
||||
if (cpHost != null) {
|
||||
cpHost.preDeleteColumnHandler(this.tableName, this.familyName);
|
||||
}
|
||||
// Update table descriptor
|
||||
this.masterServices.getMasterFileSystem().deleteColumn(tableName, familyName);
|
||||
// Remove the column family from the file system
|
||||
MasterFileSystem mfs = this.masterServices.getMasterFileSystem();
|
||||
for (HRegionInfo hri : hris) {
|
||||
// Delete the family directory in FS for all the regions one by one
|
||||
mfs.deleteFamilyFromFS(hri, familyName);
|
||||
}
|
||||
if (cpHost != null) {
|
||||
cpHost.postDeleteColumnHandler(this.tableName, this.familyName);
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
public String toString() {
|
||||
String name = "UnknownServerName";
|
||||
if(server != null && server.getServerName() != null) {
|
||||
name = server.getServerName().toString();
|
||||
}
|
||||
String family = "UnknownFamily";
|
||||
if(familyName != null) {
|
||||
family = Bytes.toString(familyName);
|
||||
}
|
||||
return getClass().getSimpleName() + "-" + name + "-" + getSeqid() +
|
||||
"-" + tableName + "-" + family;
|
||||
}
|
||||
}
|
||||
|
|
@ -1,84 +0,0 @@
|
|||
/**
|
||||
*
|
||||
* 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.handler;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.util.List;
|
||||
|
||||
import org.apache.hadoop.hbase.classification.InterfaceAudience;
|
||||
import org.apache.hadoop.hbase.TableName;
|
||||
import org.apache.hadoop.hbase.HColumnDescriptor;
|
||||
import org.apache.hadoop.hbase.HRegionInfo;
|
||||
import org.apache.hadoop.hbase.HTableDescriptor;
|
||||
import org.apache.hadoop.hbase.Server;
|
||||
import org.apache.hadoop.hbase.executor.EventType;
|
||||
import org.apache.hadoop.hbase.master.HMaster;
|
||||
import org.apache.hadoop.hbase.master.MasterCoprocessorHost;
|
||||
import org.apache.hadoop.hbase.master.MasterServices;
|
||||
|
||||
/**
|
||||
* Handles adding a new family to an existing table.
|
||||
*/
|
||||
@InterfaceAudience.Private
|
||||
public class TableModifyFamilyHandler extends TableEventHandler {
|
||||
private final HColumnDescriptor familyDesc;
|
||||
|
||||
public TableModifyFamilyHandler(TableName tableName,
|
||||
HColumnDescriptor familyDesc, Server server,
|
||||
final MasterServices masterServices) {
|
||||
super(EventType.C_M_MODIFY_FAMILY, tableName, server, masterServices);
|
||||
this.familyDesc = familyDesc;
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void prepareWithTableLock() throws IOException {
|
||||
super.prepareWithTableLock();
|
||||
HTableDescriptor htd = getTableDescriptor().getHTableDescriptor();
|
||||
hasColumnFamily(htd, familyDesc.getName());
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void handleTableOperation(List<HRegionInfo> regions) throws IOException {
|
||||
MasterCoprocessorHost cpHost = ((HMaster) this.server)
|
||||
.getMasterCoprocessorHost();
|
||||
if (cpHost != null) {
|
||||
cpHost.preModifyColumnHandler(this.tableName, this.familyDesc);
|
||||
}
|
||||
// Update table descriptor
|
||||
this.masterServices.getMasterFileSystem().modifyColumn(tableName, familyDesc);
|
||||
if (cpHost != null) {
|
||||
cpHost.postModifyColumnHandler(this.tableName, this.familyDesc);
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
public String toString() {
|
||||
String name = "UnknownServerName";
|
||||
if(server != null && server.getServerName() != null) {
|
||||
name = server.getServerName().toString();
|
||||
}
|
||||
String family = "UnknownFamily";
|
||||
if(familyDesc != null) {
|
||||
family = familyDesc.getNameAsString();
|
||||
}
|
||||
return getClass().getSimpleName() + "-" + name + "-" + getSeqid() +
|
||||
"-" + tableName + "-" + family;
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -1,142 +0,0 @@
|
|||
/**
|
||||
*
|
||||
* 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.handler;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.util.List;
|
||||
|
||||
import org.apache.commons.logging.Log;
|
||||
import org.apache.commons.logging.LogFactory;
|
||||
import org.apache.hadoop.hbase.classification.InterfaceAudience;
|
||||
import org.apache.hadoop.fs.FileSystem;
|
||||
import org.apache.hadoop.fs.Path;
|
||||
import org.apache.hadoop.hbase.CoordinatedStateException;
|
||||
import org.apache.hadoop.hbase.HRegionInfo;
|
||||
import org.apache.hadoop.hbase.Server;
|
||||
import org.apache.hadoop.hbase.TableDescriptor;
|
||||
import org.apache.hadoop.hbase.TableName;
|
||||
import org.apache.hadoop.hbase.MetaTableAccessor;
|
||||
import org.apache.hadoop.hbase.client.TableState;
|
||||
import org.apache.hadoop.hbase.master.AssignmentManager;
|
||||
import org.apache.hadoop.hbase.master.HMaster;
|
||||
import org.apache.hadoop.hbase.master.MasterCoprocessorHost;
|
||||
import org.apache.hadoop.hbase.master.MasterFileSystem;
|
||||
import org.apache.hadoop.hbase.master.MasterServices;
|
||||
import org.apache.hadoop.hbase.util.FSTableDescriptors;
|
||||
import org.apache.hadoop.hbase.util.FSUtils;
|
||||
import org.apache.hadoop.hbase.util.ModifyRegionUtils;
|
||||
|
||||
/**
|
||||
* Truncate the table by removing META and the HDFS files and recreating it.
|
||||
* If the 'preserveSplits' option is set to true, the region splits are preserved on recreate.
|
||||
*
|
||||
* If the operation fails in the middle it may require hbck to fix the system state.
|
||||
*/
|
||||
@InterfaceAudience.Private
|
||||
public class TruncateTableHandler extends DeleteTableHandler {
|
||||
private static final Log LOG = LogFactory.getLog(TruncateTableHandler.class);
|
||||
|
||||
private final boolean preserveSplits;
|
||||
|
||||
public TruncateTableHandler(final TableName tableName, final Server server,
|
||||
final MasterServices masterServices, boolean preserveSplits) {
|
||||
super(tableName, server, masterServices);
|
||||
this.preserveSplits = preserveSplits;
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void handleTableOperation(List<HRegionInfo> regions)
|
||||
throws IOException, CoordinatedStateException {
|
||||
MasterCoprocessorHost cpHost = ((HMaster) this.server).getMasterCoprocessorHost();
|
||||
if (cpHost != null) {
|
||||
cpHost.preTruncateTableHandler(this.tableName);
|
||||
}
|
||||
|
||||
// 1. Wait because of region in transition
|
||||
waitRegionInTransition(regions);
|
||||
|
||||
// 2. Remove table from hbase:meta and HDFS
|
||||
removeTableData(regions);
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// PONR: At this point the table is deleted.
|
||||
// If the recreate fails, the user can only re-create the table.
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
// 3. Recreate the regions
|
||||
recreateTable(regions);
|
||||
|
||||
if (cpHost != null) {
|
||||
cpHost.postTruncateTableHandler(this.tableName);
|
||||
}
|
||||
}
|
||||
|
||||
private void recreateTable(final List<HRegionInfo> regions) throws IOException {
|
||||
MasterFileSystem mfs = this.masterServices.getMasterFileSystem();
|
||||
Path tempdir = mfs.getTempDir();
|
||||
FileSystem fs = mfs.getFileSystem();
|
||||
|
||||
AssignmentManager assignmentManager = this.masterServices.getAssignmentManager();
|
||||
|
||||
// 1. Create Table Descriptor
|
||||
TableDescriptor underConstruction = new TableDescriptor(this.hTableDescriptor);
|
||||
Path tempTableDir = FSUtils.getTableDir(tempdir, this.tableName);
|
||||
|
||||
((FSTableDescriptors)(masterServices.getTableDescriptors()))
|
||||
.createTableDescriptorForTableDirectory(tempTableDir, underConstruction, false);
|
||||
Path tableDir = FSUtils.getTableDir(mfs.getRootDir(), this.tableName);
|
||||
|
||||
HRegionInfo[] newRegions;
|
||||
if (this.preserveSplits) {
|
||||
newRegions = regions.toArray(new HRegionInfo[regions.size()]);
|
||||
LOG.info("Truncate will preserve " + newRegions.length + " regions");
|
||||
} else {
|
||||
newRegions = new HRegionInfo[1];
|
||||
newRegions[0] = new HRegionInfo(this.tableName, null, null);
|
||||
LOG.info("Truncate will not preserve the regions");
|
||||
}
|
||||
|
||||
// 2. Create Regions
|
||||
List<HRegionInfo> regionInfos = ModifyRegionUtils.createRegions(
|
||||
masterServices.getConfiguration(), tempdir,
|
||||
this.hTableDescriptor, newRegions, null);
|
||||
|
||||
// 3. Move Table temp directory to the hbase root location
|
||||
if (!fs.rename(tempTableDir, tableDir)) {
|
||||
throw new IOException("Unable to move table from temp=" + tempTableDir +
|
||||
" to hbase root=" + tableDir);
|
||||
}
|
||||
|
||||
// populate descriptors cache to be visible in getAll
|
||||
masterServices.getTableDescriptors().get(tableName);
|
||||
|
||||
assignmentManager.getTableStateManager().setTableState(tableName,
|
||||
TableState.State.ENABLING);
|
||||
// 4. Add regions to META
|
||||
MetaTableAccessor.addRegionsToMeta(masterServices.getConnection(),
|
||||
regionInfos, hTableDescriptor.getRegionReplication());
|
||||
|
||||
// 5. Trigger immediate assignment of the regions in round-robin fashion
|
||||
ModifyRegionUtils.assignRegions(assignmentManager, regionInfos);
|
||||
|
||||
// 6. Set table enabled flag up in zk.
|
||||
assignmentManager.getTableStateManager().setTableState(tableName,
|
||||
TableState.State.ENABLED);
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue