lanyuanxiaoyao commented on code in PR #5677:
URL: https://github.com/apache/hudi/pull/5677#discussion_r914888153
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hudi-flink-datasource/hudi-flink/src/main/java/org/apache/hudi/sink/compact/HoodieFlinkCompactor.java:
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@@ -218,74 +228,104 @@ private void compact() throws Exception {
}
// fetch the instant based on the configured execution sequence
- HoodieTimeline timeline =
table.getActiveTimeline().filterPendingCompactionTimeline();
- Option<HoodieInstant> requested =
CompactionUtil.isLIFO(cfg.compactionSeq) ? timeline.lastInstant() :
timeline.firstInstant();
- if (!requested.isPresent()) {
+ HoodieTimeline timeline = table.getActiveTimeline();
+ List<HoodieInstant> requested = ((CompactionPlanSelectStrategy)
ReflectionUtils.loadClass(cfg.compactionPlanSelectStrategy))
+ .select(timeline.filterPendingCompactionTimeline(), cfg);
+ if (requested.isEmpty()) {
// do nothing.
LOG.info("No compaction plan scheduled, turns on the compaction plan
schedule with --schedule option");
return;
}
- String compactionInstantTime = requested.get().getTimestamp();
-
- HoodieInstant inflightInstant =
HoodieTimeline.getCompactionInflightInstant(compactionInstantTime);
- if (timeline.containsInstant(inflightInstant)) {
- LOG.info("Rollback inflight compaction instant: [" +
compactionInstantTime + "]");
- table.rollbackInflightCompaction(inflightInstant);
- table.getMetaClient().reloadActiveTimeline();
- }
+ List<String> compactionInstantTimes =
requested.stream().map(HoodieInstant::getTimestamp).collect(Collectors.toList());
+ compactionInstantTimes.forEach(timestamp -> {
+ HoodieInstant inflightInstant =
HoodieTimeline.getCompactionInflightInstant(timestamp);
+ if (timeline.containsInstant(inflightInstant)) {
+ LOG.info("Rollback inflight compaction instant: [" + timestamp +
"]");
+ table.rollbackInflightCompaction(inflightInstant);
+ table.getMetaClient().reloadActiveTimeline();
+ }
+ });
- // generate compaction plan
+ // generate timestamp and compaction plan pair
// should support configurable commit metadata
- HoodieCompactionPlan compactionPlan = CompactionUtils.getCompactionPlan(
- table.getMetaClient(), compactionInstantTime);
-
- if (compactionPlan == null || (compactionPlan.getOperations() == null)
- || (compactionPlan.getOperations().isEmpty())) {
+ List<Pair<String, HoodieCompactionPlan>> compactionPlans =
compactionInstantTimes.stream()
+ .map(timestamp -> {
+ try {
+ return Pair.of(timestamp,
CompactionUtils.getCompactionPlan(table.getMetaClient(), timestamp));
+ } catch (IOException e) {
+ throw new HoodieException(e);
+ }
+ })
+ // reject empty compaction plan
+ .filter(pair -> !(pair.getRight() == null
+ || pair.getRight().getOperations() == null
+ || pair.getRight().getOperations().isEmpty()))
+ .collect(Collectors.toList());
+
+ if (compactionPlans.isEmpty()) {
// No compaction plan, do nothing and return.
- LOG.info("No compaction plan for instant " + compactionInstantTime);
+ LOG.info("No compaction plan for instant " + String.join(",",
compactionInstantTimes));
return;
}
- HoodieInstant instant =
HoodieTimeline.getCompactionRequestedInstant(compactionInstantTime);
+ List<HoodieInstant> instants =
compactionInstantTimes.stream().map(HoodieTimeline::getCompactionRequestedInstant).collect(Collectors.toList());
HoodieTimeline pendingCompactionTimeline =
table.getActiveTimeline().filterPendingCompactionTimeline();
- if (!pendingCompactionTimeline.containsInstant(instant)) {
- // this means that the compaction plan was written to auxiliary
path(.tmp)
- // but not the meta path(.hoodie), this usually happens when the job
crush
- // exceptionally.
-
- // clean the compaction plan in auxiliary path and cancels the
compaction.
-
- LOG.warn("The compaction plan was fetched through the auxiliary
path(.tmp) but not the meta path(.hoodie).\n"
- + "Clean the compaction plan in auxiliary path and cancels the
compaction");
- CompactionUtil.cleanInstant(table.getMetaClient(), instant);
- return;
+ for (HoodieInstant instant : instants) {
+ if (!pendingCompactionTimeline.containsInstant(instant)) {
+ // this means that the compaction plan was written to auxiliary
path(.tmp)
+ // but not the meta path(.hoodie), this usually happens when the job
crush
+ // exceptionally.
+ // clean the compaction plan in auxiliary path and cancels the
compaction.
+ LOG.warn("The compaction plan was fetched through the auxiliary
path(.tmp) but not the meta path(.hoodie).\n"
+ + "Clean the compaction plan in auxiliary path and cancels the
compaction");
+ CompactionUtil.cleanInstant(table.getMetaClient(), instant);
+ return;
+ }
}
// get compactionParallelism.
int compactionParallelism =
conf.getInteger(FlinkOptions.COMPACTION_TASKS) == -1
- ? compactionPlan.getOperations().size() :
conf.getInteger(FlinkOptions.COMPACTION_TASKS);
+ ? Math.toIntExact(compactionPlans.stream().mapToLong(pair ->
pair.getRight().getOperations().size()).sum())
Review Comment:
I just follow the logic of old code to rewrite this. It seem to use more
paralleism to finish the compaction when the `COMPACTION_TASK` is set to `-1`.
But it will be unacceptable when there are more compaction plan. I think i can
use the default value `4` of `COMPACTION_TASK` in here. WDYT
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