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The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.
/*
* 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.cassandra.repair.messages;
import java.util.*;
import com.google.common.base.Joiner;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.cassandra.config.Config;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.dht.IPartitioner;
import org.apache.cassandra.dht.Range;
import org.apache.cassandra.dht.Token;
import org.apache.cassandra.repair.RepairParallelism;
import org.apache.cassandra.utils.FBUtilities;
/**
* Repair options.
*/
public class RepairOption
{
public static final String PARALLELISM_KEY = "parallelism";
public static final String PRIMARY_RANGE_KEY = "primaryRange";
public static final String INCREMENTAL_KEY = "incremental";
public static final String JOB_THREADS_KEY = "jobThreads";
public static final String RANGES_KEY = "ranges";
public static final String COLUMNFAMILIES_KEY = "columnFamilies";
public static final String DATACENTERS_KEY = "dataCenters";
public static final String HOSTS_KEY = "hosts";
public static final String TRACE_KEY = "trace";
public static final String SUB_RANGE_REPAIR_KEY = "sub_range_repair";
public static final String PULL_REPAIR_KEY = "pullRepair";
// we don't want to push nodes too much for repair
public static final int MAX_JOB_THREADS = 4;
private static final Logger logger = LoggerFactory.getLogger(RepairOption.class);
/**
* Construct RepairOptions object from given map of Strings.
*
* Available options are:
*
*
* Repair Options
*
*
* key
* value
* default (when key not given)
*
*
*
*
* parallelism
* "sequential", "parallel" or "dc_parallel"
* "sequential"
*
*
* primaryRange
* "true" if perform repair only on primary range.
* false
*
*
* incremental
* "true" if perform incremental repair.
* false
*
*
* trace
* "true" if repair is traced.
* false
*
*
* jobThreads
* Number of threads to use to run repair job.
* 1
*
*
* ranges
* Ranges to repair. A range is expressed as <start token>:<end token>
* and multiple ranges can be given as comma separated ranges(e.g. aaa:bbb,ccc:ddd).
*
*
* columnFamilies
* Specify names of ColumnFamilies to repair.
* Multiple ColumnFamilies can be given as comma separated values(e.g. cf1,cf2,cf3).
*
*
* dataCenters
* Specify names of data centers who participate in this repair.
* Multiple data centers can be given as comma separated values(e.g. dc1,dc2,dc3).
*
*
* hosts
* Specify names of hosts who participate in this repair.
* Multiple hosts can be given as comma separated values(e.g. cass1,cass2).
*
*
* pullRepair
* "true" if the repair should only stream data one way from a remote host to this host.
* This is only allowed if exactly 2 hosts are specified along with a token range that they share.
* false
*
*
*
*
* @param options options to parse
* @param partitioner partitioner is used to construct token ranges
* @return RepairOptions object
*/
public static RepairOption parse(Map options, IPartitioner partitioner)
{
// if no parallel option is given, then this will be "sequential" by default.
RepairParallelism parallelism = RepairParallelism.fromName(options.get(PARALLELISM_KEY));
boolean primaryRange = Boolean.parseBoolean(options.get(PRIMARY_RANGE_KEY));
boolean incremental = Boolean.parseBoolean(options.get(INCREMENTAL_KEY));
boolean trace = Boolean.parseBoolean(options.get(TRACE_KEY));
boolean pullRepair = Boolean.parseBoolean(options.get(PULL_REPAIR_KEY));
int jobThreads = 1;
if (options.containsKey(JOB_THREADS_KEY))
{
try
{
jobThreads = Integer.parseInt(options.get(JOB_THREADS_KEY));
}
catch (NumberFormatException ignore) {}
}
// ranges
String rangesStr = options.get(RANGES_KEY);
Set> ranges = new HashSet<>();
if (rangesStr != null)
{
if (incremental)
logger.warn("Incremental repair can't be requested with subrange repair " +
"because each subrange repair would generate an anti-compacted table. " +
"The repair will occur but without anti-compaction.");
StringTokenizer tokenizer = new StringTokenizer(rangesStr, ",");
while (tokenizer.hasMoreTokens())
{
String[] rangeStr = tokenizer.nextToken().split(":", 2);
if (rangeStr.length < 2)
{
continue;
}
Token parsedBeginToken = partitioner.getTokenFactory().fromString(rangeStr[0].trim());
Token parsedEndToken = partitioner.getTokenFactory().fromString(rangeStr[1].trim());
if (parsedBeginToken.equals(parsedEndToken))
{
throw new IllegalArgumentException("Start and end tokens must be different.");
}
ranges.add(new Range<>(parsedBeginToken, parsedEndToken));
}
}
RepairOption option = new RepairOption(parallelism, primaryRange, incremental, trace, jobThreads, ranges, !ranges.isEmpty(), pullRepair);
// data centers
String dataCentersStr = options.get(DATACENTERS_KEY);
Collection dataCenters = new HashSet<>();
if (dataCentersStr != null)
{
StringTokenizer tokenizer = new StringTokenizer(dataCentersStr, ",");
while (tokenizer.hasMoreTokens())
{
dataCenters.add(tokenizer.nextToken().trim());
}
option.getDataCenters().addAll(dataCenters);
}
// hosts
String hostsStr = options.get(HOSTS_KEY);
Collection hosts = new HashSet<>();
if (hostsStr != null)
{
StringTokenizer tokenizer = new StringTokenizer(hostsStr, ",");
while (tokenizer.hasMoreTokens())
{
hosts.add(tokenizer.nextToken().trim());
}
option.getHosts().addAll(hosts);
}
// columnfamilies
String cfStr = options.get(COLUMNFAMILIES_KEY);
if (cfStr != null)
{
Collection columnFamilies = new HashSet<>();
StringTokenizer tokenizer = new StringTokenizer(cfStr, ",");
while (tokenizer.hasMoreTokens())
{
columnFamilies.add(tokenizer.nextToken().trim());
}
option.getColumnFamilies().addAll(columnFamilies);
}
// validate options
if (jobThreads > MAX_JOB_THREADS)
{
throw new IllegalArgumentException("Too many job threads. Max is " + MAX_JOB_THREADS);
}
if (!dataCenters.isEmpty() && !hosts.isEmpty())
{
throw new IllegalArgumentException("Cannot combine -dc and -hosts options.");
}
if (primaryRange && ((!dataCenters.isEmpty() && !option.isInLocalDCOnly()) || !hosts.isEmpty()))
{
throw new IllegalArgumentException("You need to run primary range repair on all nodes in the cluster.");
}
if (pullRepair)
{
if (hosts.size() != 2)
{
throw new IllegalArgumentException("Pull repair can only be performed between two hosts. Please specify two hosts, one of which must be this host.");
}
else if (ranges.isEmpty())
{
throw new IllegalArgumentException("Token ranges must be specified when performing pull repair. Please specify at least one token range which both hosts have in common.");
}
}
return option;
}
private final RepairParallelism parallelism;
private final boolean primaryRange;
private final boolean incremental;
private final boolean trace;
private final int jobThreads;
private final boolean isSubrangeRepair;
private final boolean pullRepair;
private final Collection columnFamilies = new HashSet<>();
private final Collection dataCenters = new HashSet<>();
private final Collection hosts = new HashSet<>();
private final Collection> ranges = new HashSet<>();
public RepairOption(RepairParallelism parallelism, boolean primaryRange, boolean incremental, boolean trace, int jobThreads, Collection> ranges, boolean isSubrangeRepair, boolean pullRepair)
{
if (FBUtilities.isWindows &&
(DatabaseDescriptor.getDiskAccessMode() != Config.DiskAccessMode.standard || DatabaseDescriptor.getIndexAccessMode() != Config.DiskAccessMode.standard) &&
parallelism == RepairParallelism.SEQUENTIAL)
{
logger.warn("Sequential repair disabled when memory-mapped I/O is configured on Windows. Reverting to parallel.");
this.parallelism = RepairParallelism.PARALLEL;
}
else
this.parallelism = parallelism;
this.primaryRange = primaryRange;
this.incremental = incremental;
this.trace = trace;
this.jobThreads = jobThreads;
this.ranges.addAll(ranges);
this.isSubrangeRepair = isSubrangeRepair;
this.pullRepair = pullRepair;
}
public RepairParallelism getParallelism()
{
return parallelism;
}
public boolean isPrimaryRange()
{
return primaryRange;
}
public boolean isIncremental()
{
return incremental;
}
public boolean isTraced()
{
return trace;
}
public boolean isPullRepair()
{
return pullRepair;
}
public int getJobThreads()
{
return jobThreads;
}
public Collection getColumnFamilies()
{
return columnFamilies;
}
public Collection> getRanges()
{
return ranges;
}
public Collection getDataCenters()
{
return dataCenters;
}
public Collection getHosts()
{
return hosts;
}
public boolean isGlobal()
{
return dataCenters.isEmpty() && hosts.isEmpty() && !isSubrangeRepair();
}
public boolean isSubrangeRepair()
{
return isSubrangeRepair;
}
public boolean isInLocalDCOnly() {
return dataCenters.size() == 1 && dataCenters.contains(DatabaseDescriptor.getLocalDataCenter());
}
@Override
public String toString()
{
return "repair options (" +
"parallelism: " + parallelism +
", primary range: " + primaryRange +
", incremental: " + incremental +
", job threads: " + jobThreads +
", ColumnFamilies: " + columnFamilies +
", dataCenters: " + dataCenters +
", hosts: " + hosts +
", # of ranges: " + ranges.size() +
", pull repair: " + pullRepair +
')';
}
public Map asMap()
{
Map options = new HashMap<>();
options.put(PARALLELISM_KEY, parallelism.toString());
options.put(PRIMARY_RANGE_KEY, Boolean.toString(primaryRange));
options.put(INCREMENTAL_KEY, Boolean.toString(incremental));
options.put(JOB_THREADS_KEY, Integer.toString(jobThreads));
options.put(COLUMNFAMILIES_KEY, Joiner.on(",").join(columnFamilies));
options.put(DATACENTERS_KEY, Joiner.on(",").join(dataCenters));
options.put(HOSTS_KEY, Joiner.on(",").join(hosts));
options.put(SUB_RANGE_REPAIR_KEY, Boolean.toString(isSubrangeRepair));
options.put(TRACE_KEY, Boolean.toString(trace));
options.put(RANGES_KEY, Joiner.on(",").join(ranges));
options.put(PULL_REPAIR_KEY, Boolean.toString(pullRepair));
return options;
}
}