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Update Settings: Allow to dynamically update `index.translog` settings, closes #765.

This commit is contained in:
kimchy 2011-03-09 14:17:34 +02:00
parent c2a0e0b767
commit 80a797fc4f
1 changed files with 33 additions and 4 deletions
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37
modules/elasticsearch/src/main/java/org/elasticsearch/index/translog/TranslogService.java
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@ -28,6 +28,7 @@ import org.elasticsearch.index.engine.Engine;
import org.elasticsearch.index.engine.EngineClosedException;
import org.elasticsearch.index.engine.FlushNotAllowedEngineException;
import org.elasticsearch.index.settings.IndexSettings;
import org.elasticsearch.index.settings.IndexSettingsService;
import org.elasticsearch.index.shard.AbstractIndexShardComponent;
import org.elasticsearch.index.shard.IndexShardState;
import org.elasticsearch.index.shard.ShardId;
@ -45,23 +46,28 @@ public class TranslogService extends AbstractIndexShardComponent {
private final ThreadPool threadPool;
private final IndexSettingsService indexSettingsService;
private final IndexShard indexShard;
private final Translog translog;
private final int flushThresholdOperations;
private int flushThresholdOperations;
private final ByteSizeValue flushThresholdSize;
private ByteSizeValue flushThresholdSize;
private final TimeValue flushThresholdPeriod;
private TimeValue flushThresholdPeriod;
private final TimeValue interval;
private ScheduledFuture future;
@Inject public TranslogService(ShardId shardId, @IndexSettings Settings indexSettings, ThreadPool threadPool, IndexShard indexShard, Translog translog) {
private final ApplySettings applySettings = new ApplySettings();
@Inject public TranslogService(ShardId shardId, @IndexSettings Settings indexSettings, IndexSettingsService indexSettingsService, ThreadPool threadPool, IndexShard indexShard, Translog translog) {
super(shardId, indexSettings);
this.threadPool = threadPool;
this.indexSettingsService = indexSettingsService;
this.indexShard = indexShard;
this.translog = translog;
@ -73,13 +79,36 @@ public class TranslogService extends AbstractIndexShardComponent {
logger.debug("interval [{}], flush_threshold_ops [{}], flush_threshold_size [{}], flush_threshold_period [{}]", interval, flushThresholdOperations, flushThresholdSize, flushThresholdPeriod);
this.future = threadPool.schedule(interval, ThreadPool.Names.SAME, new TranslogBasedFlush());
indexSettingsService.addListener(applySettings);
}
public void close() {
indexSettingsService.removeListener(applySettings);
this.future.cancel(true);
}
class ApplySettings implements IndexSettingsService.Listener {
@Override public void onRefreshSettings(Settings settings) {
int flushThresholdOperations = settings.getAsInt("index.translog.flush_threshold_ops", TranslogService.this.flushThresholdOperations);
if (flushThresholdOperations != TranslogService.this.flushThresholdOperations) {
logger.info("updating flush_threshold_ops from [{}] to [{}]", TranslogService.this.flushThresholdOperations, flushThresholdOperations);
TranslogService.this.flushThresholdOperations = flushThresholdOperations;
}
ByteSizeValue flushThresholdSize = settings.getAsBytesSize("index.translog.flush_threshold_size", TranslogService.this.flushThresholdSize);
if (!flushThresholdSize.equals(TranslogService.this.flushThresholdSize)) {
logger.info("updating flush_threshold_size from [{}] to [{}]", TranslogService.this.flushThresholdSize, flushThresholdSize);
TranslogService.this.flushThresholdSize = flushThresholdSize;
}
TimeValue flushThresholdPeriod = settings.getAsTime("index.translog.flush_threshold_period", TranslogService.this.flushThresholdPeriod);
if (!flushThresholdPeriod.equals(TranslogService.this.flushThresholdPeriod)) {
logger.info("updating flush_threshold_period from [{}] to [{}]", TranslogService.this.flushThresholdPeriod, flushThresholdPeriod);
TranslogService.this.flushThresholdPeriod = flushThresholdPeriod;
}
}
}
private class TranslogBasedFlush implements Runnable {
private volatile long lastFlushTime = System.currentTimeMillis();