io.druid.query.DruidProcessingConfig Maven / Gradle / Ivy
/*
* Licensed to Metamarkets Group Inc. (Metamarkets) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Metamarkets 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 io.druid.query;
import io.druid.java.util.common.concurrent.ExecutorServiceConfig;
import io.druid.segment.column.ColumnConfig;
import org.skife.config.Config;
public abstract class DruidProcessingConfig extends ExecutorServiceConfig implements ColumnConfig
{
public static final int DEFAULT_NUM_MERGE_BUFFERS = -1;
@Config({"druid.computation.buffer.size", "${base_path}.buffer.sizeBytes"})
public int intermediateComputeSizeBytes()
{
return 1024 * 1024 * 1024;
}
@Config({"druid.computation.buffer.poolCacheMaxCount", "${base_path}.buffer.poolCacheMaxCount"})
public int poolCacheMaxCount()
{
return Integer.MAX_VALUE;
}
@Override
@Config(value = "${base_path}.numThreads")
public int getNumThreadsConfigured()
{
return DEFAULT_NUM_THREADS;
}
public int getNumMergeBuffers()
{
int numMergeBuffersConfigured = getNumMergeBuffersConfigured();
if (numMergeBuffersConfigured != DEFAULT_NUM_MERGE_BUFFERS) {
return numMergeBuffersConfigured;
} else {
return Math.max(2, getNumThreads() / 4);
}
}
/**
* Returns the number of merge buffers _explicitly_ configured, or -1 if it is not explicitly configured, that is not
* a valid number of buffers. To get the configured value or the default (valid) number, use {@link
* #getNumMergeBuffers()}. This method exists for ability to distinguish between the default value set when there is
* no explicit config, and an explicitly configured value.
*/
@Config("${base_path}.numMergeBuffers")
public int getNumMergeBuffersConfigured()
{
return DEFAULT_NUM_MERGE_BUFFERS;
}
@Override
@Config(value = "${base_path}.columnCache.sizeBytes")
public int columnCacheSizeBytes()
{
return 0;
}
@Config(value = "${base_path}.fifo")
public boolean isFifo()
{
return false;
}
@Config(value = "${base_path}.tmpDir")
public String getTmpDir()
{
return System.getProperty("java.io.tmpdir");
}
}