/** Initialization when invoked from QL. */
@Override
public void initialize(HiveConf conf, QueryPlan queryPlan, DriverContext driverContext) {
super.initialize(conf, queryPlan, driverContext);
job = new JobConf(conf, ExecDriver.class);
// NOTE: initialize is only called if it is in non-local mode.
// In case it's in non-local mode, we need to move the SessionState files
// and jars to jobConf.
// In case it's in local mode, MapRedTask will set the jobConf.
//
// "tmpfiles" and "tmpjars" are set by the method ExecDriver.execute(),
// which will be called by both local and NON-local mode.
String addedFiles = Utilities.getResourceFiles(job, SessionState.ResourceType.FILE);
if (StringUtils.isNotBlank(addedFiles)) {
HiveConf.setVar(job, ConfVars.HIVEADDEDFILES, addedFiles);
}
String addedJars = Utilities.getResourceFiles(job, SessionState.ResourceType.JAR);
if (StringUtils.isNotBlank(addedJars)) {
HiveConf.setVar(job, ConfVars.HIVEADDEDJARS, addedJars);
}
String addedArchives = Utilities.getResourceFiles(job, SessionState.ResourceType.ARCHIVE);
if (StringUtils.isNotBlank(addedArchives)) {
HiveConf.setVar(job, ConfVars.HIVEADDEDARCHIVES, addedArchives);
}
conf.stripHiddenConfigurations(job);
this.jobExecHelper = new HadoopJobExecHelper(job, console, this, this);
}
/**
* handle partial scan command.
*
* <p>It is composed of PartialScanTask followed by StatsTask.
*/
private void handlePartialScanCommand(
TableScanOperator tableScan,
ParseContext parseContext,
StatsWork statsWork,
GenTezProcContext context,
Task<StatsWork> statsTask)
throws SemanticException {
String aggregationKey = tableScan.getConf().getStatsAggPrefix();
StringBuilder aggregationKeyBuffer = new StringBuilder(aggregationKey);
List<Path> inputPaths =
GenMapRedUtils.getInputPathsForPartialScan(tableScan, aggregationKeyBuffer);
aggregationKey = aggregationKeyBuffer.toString();
// scan work
PartialScanWork scanWork = new PartialScanWork(inputPaths);
scanWork.setMapperCannotSpanPartns(true);
scanWork.setAggKey(aggregationKey);
scanWork.setStatsTmpDir(tableScan.getConf().getTmpStatsDir(), parseContext.getConf());
// stats work
statsWork.setPartialScanAnalyzeCommand(true);
// partial scan task
DriverContext driverCxt = new DriverContext();
Task<PartialScanWork> partialScanTask = TaskFactory.get(scanWork, parseContext.getConf());
partialScanTask.initialize(parseContext.getConf(), null, driverCxt);
partialScanTask.setWork(scanWork);
statsWork.setSourceTask(partialScanTask);
// task dependency
context.rootTasks.remove(context.currentTask);
context.rootTasks.add(partialScanTask);
partialScanTask.addDependentTask(statsTask);
}
/**
* handle partial scan command. It is composed of PartialScanTask followed by StatsTask .
*
* @param op
* @param ctx
* @param parseCtx
* @param currTask
* @param parseInfo
* @param statsWork
* @param statsTask
* @throws SemanticException
*/
private void handlePartialScanCommand(
TableScanOperator op,
GenMRProcContext ctx,
ParseContext parseCtx,
Task<? extends Serializable> currTask,
StatsWork statsWork,
Task<StatsWork> statsTask)
throws SemanticException {
String aggregationKey = op.getConf().getStatsAggPrefix();
StringBuffer aggregationKeyBuffer = new StringBuffer(aggregationKey);
List<Path> inputPaths = GenMapRedUtils.getInputPathsForPartialScan(op, aggregationKeyBuffer);
aggregationKey = aggregationKeyBuffer.toString();
// scan work
PartialScanWork scanWork = new PartialScanWork(inputPaths);
scanWork.setMapperCannotSpanPartns(true);
scanWork.setAggKey(aggregationKey);
// stats work
statsWork.setPartialScanAnalyzeCommand(true);
// partial scan task
DriverContext driverCxt = new DriverContext();
Task<PartialScanWork> psTask = TaskFactory.get(scanWork, parseCtx.getConf());
psTask.initialize(parseCtx.getConf(), null, driverCxt);
psTask.setWork(scanWork);
// task dependency
ctx.getRootTasks().remove(currTask);
ctx.getRootTasks().add(psTask);
psTask.addDependentTask(statsTask);
List<Task<? extends Serializable>> parentTasks = new ArrayList<Task<? extends Serializable>>();
parentTasks.add(psTask);
statsTask.setParentTasks(parentTasks);
}
@Override
public void initialize(
HiveConf conf, QueryPlan queryPlan, DriverContext ctx, CompilationOpContext opContext) {
super.initialize(conf, queryPlan, ctx, opContext);
work.initializeForFetch(opContext);
try {
// Create a file system handle
JobConf job = new JobConf(conf);
Operator<?> source = work.getSource();
if (source instanceof TableScanOperator) {
TableScanOperator ts = (TableScanOperator) source;
// push down projections
ColumnProjectionUtils.appendReadColumns(
job, ts.getNeededColumnIDs(), ts.getNeededColumns());
// push down filters
HiveInputFormat.pushFilters(job, ts);
}
sink = work.getSink();
fetch = new FetchOperator(work, job, source, getVirtualColumns(source));
source.initialize(conf, new ObjectInspector[] {fetch.getOutputObjectInspector()});
totalRows = 0;
ExecMapper.setDone(false);
} catch (Exception e) {
// Bail out ungracefully - we should never hit
// this here - but would have hit it in SemanticAnalyzer
LOG.error(StringUtils.stringifyException(e));
throw new RuntimeException(e);
}
}
@Override
public void initialize(
HiveConf conf,
QueryPlan queryPlan,
DriverContext driverContext,
CompilationOpContext opContext) {
super.initialize(conf, queryPlan, driverContext, opContext);
job = new JobConf(conf, ExecDriver.class);
execContext = new ExecMapperContext(job);
// we don't use the HadoopJobExecHooks for local tasks
this.jobExecHelper = new HadoopJobExecHelper(job, console, this, null);
}
@Override
public void initialize(HiveConf conf, QueryPlan queryPlan, DriverContext driverContext) {
super.initialize(conf, queryPlan, driverContext);
job = new JobConf(conf, BlockMergeTask.class);
jobExecHelper = new HadoopJobExecHelper(job, this.console, this, this);
}
