/**
* Set the query execution options for the specified plans.
*
* @param plans the physical query plan
* @param ftMode the fault tolerance mode under which the query will be executed
* @param profilingMode how the query should be profiled
*/
public static void setQueryExecutionOptions(
final Map<Integer, SubQueryPlan> plans,
final FTMode ftMode,
@Nonnull final Set<ProfilingMode> profilingMode) {
for (SubQueryPlan plan : plans.values()) {
plan.setFTMode(ftMode);
plan.setProfilingMode(profilingMode);
}
}
/**
* Instantiate the server's desired physical plan from a list of JSON encodings of fragments. This
* list must contain a self-consistent, complete query. All fragments will be executed in
* parallel.
*
* @param fragments the JSON-encoded query fragments to be executed in parallel
* @param server the server on which the query will be executed
* @return the physical plan
* @throws CatalogException if there is an error instantiating the plan
*/
public static Map<Integer, SubQueryPlan> instantiate(
final List<PlanFragmentEncoding> fragments, final ConstructArgs args)
throws CatalogException {
// Assign fragment index before everything else
int idx = 0;
for (PlanFragmentEncoding fragment : fragments) {
fragment.setFragmentIndex(idx++);
}
/* Sanity check the edges between fragments. */
sanityCheckEdges(fragments);
assignWorkersToFragments(fragments, args);
Map<Integer, PlanFragmentEncoding> op2OwnerFragmentMapping = Maps.newHashMap();
for (PlanFragmentEncoding fragment : fragments) {
for (OperatorEncoding<?> op : fragment.operators) {
op2OwnerFragmentMapping.put(op.opId, fragment);
}
}
Map<Integer, SubQueryPlan> plan = Maps.newHashMap();
Map<PlanFragmentEncoding, RootOperator> instantiatedFragments = Maps.newHashMap();
Map<Integer, Operator> allOperators = Maps.newHashMap();
for (PlanFragmentEncoding fragment : fragments) {
RootOperator op =
instantiateFragment(
fragment, args, instantiatedFragments, op2OwnerFragmentMapping, allOperators);
for (Integer worker : fragment.workers) {
SubQueryPlan workerPlan = plan.get(worker);
if (workerPlan == null) {
workerPlan = new SubQueryPlan();
plan.put(worker, workerPlan);
}
workerPlan.addRootOp(op);
}
}
return plan;
}
