org.apache.hadoop.hive.ql.exec.tez.Utils Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.hadoop.hive.ql.exec.tez;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import com.facebook.presto.hive.$internal.com.google.common.base.Preconditions;
import com.facebook.presto.hive.$internal.org.apache.commons.lang.ArrayUtils;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.hadoop.hive.llap.registry.LlapServiceInstance;
import org.apache.hadoop.hive.llap.registry.LlapServiceInstanceSet;
import org.apache.hadoop.hive.llap.registry.impl.LlapRegistryService;
import org.apache.hadoop.mapred.InputSplit;
import org.apache.hadoop.mapred.split.SplitLocationProvider;
import com.facebook.presto.hive.$internal.org.slf4j.Logger;
public class Utils {
public static SplitLocationProvider getSplitLocationProvider(Configuration conf, Logger LOG)
throws IOException {
// fall back to checking confs
return getSplitLocationProvider(conf, true, LOG);
}
public static SplitLocationProvider getSplitLocationProvider(Configuration conf, boolean useCacheAffinity, Logger LOG) throws
IOException {
boolean useCustomLocations =
HiveConf.getVar(conf, HiveConf.ConfVars.HIVE_EXECUTION_MODE).equals("llap")
&& HiveConf.getBoolVar(conf, HiveConf.ConfVars.LLAP_CLIENT_CONSISTENT_SPLITS)
&& useCacheAffinity;
SplitLocationProvider splitLocationProvider;
LOG.info("SplitGenerator using llap affinitized locations: " + useCustomLocations);
if (useCustomLocations) {
LlapRegistryService serviceRegistry = LlapRegistryService.getClient(conf);
LOG.info("Using LLAP instance " + serviceRegistry.getApplicationId());
Collection serviceInstances =
serviceRegistry.getInstances().getAllInstancesOrdered(true);
Preconditions.checkArgument(!serviceInstances.isEmpty(),
"No running LLAP daemons! Please check LLAP service status and zookeeper configuration");
ArrayList locations = new ArrayList<>(serviceInstances.size());
for (LlapServiceInstance serviceInstance : serviceInstances) {
if (LOG.isDebugEnabled()) {
LOG.debug("Adding " + serviceInstance.getWorkerIdentity() + " with hostname=" +
serviceInstance.getHost() + " to list for split locations");
}
locations.add(serviceInstance.getHost());
}
splitLocationProvider = new HostAffinitySplitLocationProvider(locations);
} else {
splitLocationProvider = new SplitLocationProvider() {
@Override
public String[] getLocations(InputSplit split) throws IOException {
if (split == null) {
return null;
}
String[] locations = split.getLocations();
if (locations != null && locations.length == 1) {
if ("localhost".equals(locations[0])) {
return ArrayUtils.EMPTY_STRING_ARRAY;
}
}
return locations;
}
};
}
return splitLocationProvider;
}
}