NealSun96 commented on a change in pull request #1076:
URL: https://github.com/apache/helix/pull/1076#discussion_r443070095
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File path: helix-core/src/main/java/org/apache/helix/task/TaskUtil.java
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@@ -977,72 +1011,69 @@ public static boolean isJobStarted(String job,
WorkflowContext workflowContext)
}
/**
- * Clean up all jobs that are COMPLETED and passes its expiry time.
- * @param workflowConfig
- * @param workflowContext
+ * Clean up all jobs that are marked as expired.
*/
- public static void purgeExpiredJobs(String workflow, WorkflowConfig
workflowConfig,
- WorkflowContext workflowContext, HelixManager manager,
- RebalanceScheduler rebalanceScheduler) {
- if (workflowContext == null) {
- LOG.warn(String.format("Workflow %s context does not exist!", workflow));
- return;
+ public static void purgeExpiredJobs(String workflow, Set<String> expiredJobs,
+ HelixManager manager, RebalanceScheduler rebalanceScheduler) {
+ Set<String> failedJobRemovals = new HashSet<>();
+ for (String job : expiredJobs) {
+ if (!TaskUtil
+ .removeJob(manager.getHelixDataAccessor(),
manager.getHelixPropertyStore(), job)) {
+ failedJobRemovals.add(job);
+ LOG.warn("Failed to clean up expired and completed jobs from workflow
" + workflow);
+ }
+ rebalanceScheduler.removeScheduledRebalance(job);
}
- long purgeInterval = workflowConfig.getJobPurgeInterval();
- long currentTime = System.currentTimeMillis();
- final Set<String> expiredJobs = Sets.newHashSet();
- if (purgeInterval > 0 && workflowContext.getLastJobPurgeTime() +
purgeInterval <= currentTime) {
-
expiredJobs.addAll(TaskUtil.getExpiredJobs(manager.getHelixDataAccessor(),
- manager.getHelixPropertyStore(), workflowConfig, workflowContext));
- if (expiredJobs.isEmpty()) {
- LOG.info("No job to purge for the queue " + workflow);
- } else {
- LOG.info("Purge jobs " + expiredJobs + " from queue " + workflow);
- Set<String> failedJobRemovals = new HashSet<>();
- for (String job : expiredJobs) {
- if (!TaskUtil.removeJob(manager.getHelixDataAccessor(),
manager.getHelixPropertyStore(),
- job)) {
- failedJobRemovals.add(job);
- LOG.warn("Failed to clean up expired and completed jobs from
workflow " + workflow);
- }
- rebalanceScheduler.removeScheduledRebalance(job);
- }
- // If the job removal failed, make sure we do NOT prematurely delete
it from DAG so that the
- // removal will be tried again at next purge
- expiredJobs.removeAll(failedJobRemovals);
+ // If the job removal failed, make sure we do NOT prematurely delete it
from DAG so that the
+ // removal will be tried again at next purge
+ expiredJobs.removeAll(failedJobRemovals);
- if (!TaskUtil.removeJobsFromDag(manager.getHelixDataAccessor(),
workflow, expiredJobs,
- true)) {
- LOG.warn("Error occurred while trying to remove jobs + " +
expiredJobs
- + " from the workflow " + workflow);
- }
+ if (!TaskUtil.removeJobsFromDag(manager.getHelixDataAccessor(), workflow,
expiredJobs, true)) {
+ LOG.warn("Error occurred while trying to remove jobs + " + expiredJobs +
" from the workflow "
+ + workflow);
+ }
- if (expiredJobs.size() > 0) {
- // Update workflow context will be in main pipeline not here.
Otherwise, it will cause
- // concurrent write issue. It is possible that jobs got purged but
there is no event to
- // trigger the pipeline to clean context.
- HelixDataAccessor accessor = manager.getHelixDataAccessor();
- List<String> resourceConfigs =
- accessor.getChildNames(accessor.keyBuilder().resourceConfigs());
- if (resourceConfigs.size() > 0) {
- RebalanceUtil.scheduleOnDemandPipeline(manager.getClusterName(),
0L);
- } else {
- LOG.warn(
- "No resource config to trigger rebalance for clean up contexts
for" + expiredJobs);
- }
- }
+ if (expiredJobs.size() > 0) {
+ // Update workflow context will be in main pipeline not here. Otherwise,
it will cause
+ // concurrent write issue. It is possible that jobs got purged but there
is no event to
+ // trigger the pipeline to clean context.
+ HelixDataAccessor accessor = manager.getHelixDataAccessor();
+ List<String> resourceConfigs =
+ accessor.getChildNames(accessor.keyBuilder().resourceConfigs());
+ if (resourceConfigs.size() > 0) {
+ RebalanceUtil.scheduleOnDemandPipeline(manager.getClusterName(), 0L);
+ } else {
+ LOG.warn("No resource config to trigger rebalance for clean up
contexts for" + expiredJobs);
}
}
- setNextJobPurgeTime(workflow, currentTime, purgeInterval,
rebalanceScheduler, manager);
Review comment:
This function is moved from here to `TaskGarbageCollectionStage`'s main
thread. The reason for the move is that purgeInterval no longer needs to be
passed to the async thread. I believe the trade-off is worth it because the
frequency isn't critical. FYI: @dasahcc
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