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Remove Query ID verification check from MSQ workers (#16886) 

Upgrade/Downgrade between any version till or before Druid 30 where the newer version runs a worker task, while the older version runs a controller task can fail. The patch removes that verification check till its safe to add it back.
This commit is contained in:
Laksh Singla 2024-08-14 10:22:19 +05:30 committed by GitHub
parent acadc2df20
commit 204533cade
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2 changed files with 7 additions and 13 deletions
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17
extensions-core/multi-stage-query/src/main/java/org/apache/druid/msq/exec/WorkerImpl.java
View File

@ -1100,7 +1100,7 @@ public class WorkerImpl implements Worker
*/
public void addKernel(final WorkerStageKernel kernel)
{
final StageId stageId = verifyQueryId(kernel.getWorkOrder().getStageDefinition().getId());
final StageId stageId = kernel.getWorkOrder().getStageDefinition().getId();
if (holderMap.putIfAbsent(stageId.getStageNumber(), new KernelHolder(kernel)) != null) {
// Already added. Do nothing.
@ -1116,7 +1116,7 @@ public class WorkerImpl implements Worker
*/
public void finishProcessing(final StageId stageId)
{
final KernelHolder kernel = holderMap.get(verifyQueryId(stageId).getStageNumber());
final KernelHolder kernel = holderMap.get(stageId.getStageNumber());
if (kernel != null) {
try {
@ -1137,7 +1137,7 @@ public class WorkerImpl implements Worker
*/
public void removeKernel(final StageId stageId)
{
final KernelHolder removed = holderMap.remove(verifyQueryId(stageId).getStageNumber());
final KernelHolder removed = holderMap.remove(stageId.getStageNumber());
if (removed == null) {
throw new ISE("No kernel for stage[%s]", stageId);
@ -1191,7 +1191,7 @@ public class WorkerImpl implements Worker
@Nullable
public WorkerStageKernel getKernelFor(final StageId stageId)
{
final KernelHolder holder = holderMap.get(verifyQueryId(stageId).getStageNumber());
final KernelHolder holder = holderMap.get(stageId.getStageNumber());
if (holder != null) {
return holder.kernel;
} else {
@ -1240,15 +1240,6 @@ public class WorkerImpl implements Worker
{
this.done = true;
}
private StageId verifyQueryId(final StageId stageId)
{
if (!stageId.getQueryId().equals(workerContext.queryId())) {
throw new ISE("Unexpected queryId[%s], expected queryId[%s]", stageId.getQueryId(), workerContext.queryId());
}
return stageId;
}
}
/**

3
extensions-core/multi-stage-query/src/main/java/org/apache/druid/msq/kernel/StageId.java
View File

@ -31,6 +31,9 @@ import java.util.Objects;
/**
* Globally unique stage identifier: query ID plus stage number.
*
* Note: Versions till Druid 30 had a bug in the QueryKits which populated the {@link #queryId} field with random
* UUIDs. Therefore, all usage of the field must be vetted instead of assuming that it will be the expected query id
*/
public class StageId implements Comparable<StageId>
{