zhangyue19921010 commented on code in PR #13285:
URL: https://github.com/apache/hudi/pull/13285#discussion_r2086409700
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hudi-flink-datasource/hudi-flink/src/main/java/org/apache/hudi/sink/StreamWriteOperatorCoordinator.java:
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@@ -397,75 +408,66 @@ private void startInstant() {
this.instant = this.writeClient.startCommit(tableState.commitAction,
this.metaClient);
this.metaClient.getActiveTimeline().transitionRequestedToInflight(tableState.commitAction,
this.instant);
this.writeClient.setWriteTimer(tableState.commitAction);
- this.ckpMetadata.startInstant(this.instant);
LOG.info("Create instant [{}] for table [{}] with type [{}]", this.instant,
this.conf.getString(FlinkOptions.TABLE_NAME),
conf.getString(FlinkOptions.TABLE_TYPE));
+ return this.instant;
}
/**
- * Initializes the instant.
- *
- * <p>Recommits the last inflight instant if the write metadata checkpoint
successfully
+ * Recommits the last inflight instant if the write metadata checkpoint
successfully
* but was not committed due to some rare cases.
- *
- * <p>Starts a new instant, a writer can not flush data buffer
- * until it finds a new inflight instant on the timeline.
*/
- private void initInstant(String instant) {
+ private void recommitInstant(long checkpointId, String instant,
WriteMetadataEvent[] bootstrapBuffer) {
HoodieTimeline completedTimeline =
this.metaClient.getActiveTimeline().filterCompletedInstants();
if (instant.equals(WriteMetadataEvent.BOOTSTRAP_INSTANT) ||
completedTimeline.containsInstant(instant)) {
// the last instant committed successfully
- reset();
+ // no-op
} else {
LOG.info("Recommit instant {}", instant);
- // Recommit should start heartbeat for lazy failed writes clean policy
to avoid aborting for heartbeat expired.
+ // Recommit should start heartbeat for lazy failed writes clean policy
to avoid aborting for heartbeat expired;
+ // The following up checkpoints would recommit the instant.
if (writeClient.getConfig().getFailedWritesCleanPolicy().isLazy()) {
writeClient.getHeartbeatClient().start(instant);
}
- commitInstant(instant);
- }
- // stop the heartbeat for old instant
- if (writeClient.getConfig().getFailedWritesCleanPolicy().isLazy() &&
!WriteMetadataEvent.BOOTSTRAP_INSTANT.equals(this.instant)) {
- writeClient.getHeartbeatClient().stop(this.instant);
+ commitInstant(checkpointId, instant, bootstrapBuffer);
}
- // starts a new instant
- startInstant();
// upgrade downgrade
this.writeClient.upgradeDowngrade(this.instant, this.metaClient);
}
private void handleBootstrapEvent(WriteMetadataEvent event) {
- this.eventBuffer[event.getTaskID()] = event;
+ cleanLegacyEvent(event);
+ WriteMetadataEvent[] eventBuffer = getOrCreateBootstrapBuffer(event);
+ eventBuffer[event.getTaskID()] = event;
if (Arrays.stream(eventBuffer).allMatch(evt -> evt != null &&
evt.isBootstrap())) {
- // start to initialize the instant.
- final String instant = Arrays.stream(eventBuffer)
- .filter(evt -> evt.getWriteStatuses().size() > 0)
- .findFirst().map(WriteMetadataEvent::getInstantTime)
- .orElse(WriteMetadataEvent.BOOTSTRAP_INSTANT);
-
- // if currentInstant is pending && bootstrap event instant is empty
- // reuse currentInstant, reject bootstrap
- if
(this.metaClient.reloadActiveTimeline().filterInflightsAndRequested().containsInstant(this.instant)
- && instant.equals(WriteMetadataEvent.BOOTSTRAP_INSTANT)
- && this.tableState.operationType == WriteOperationType.INSERT) {
- LOG.warn("Reuse current pending Instant {} with {} operationType, "
- + "ignoring empty bootstrap event.", this.instant,
WriteOperationType.INSERT.value());
- reset();
-
- // send commit act event to unblock write tasks
- sendCommitAckEvents(-1L);
- return;
- }
+ // start to recommit the instant.
+ recommitInstant(event.getCheckpointId(), event.getInstantTime(),
eventBuffer);
+ }
+ }
+
+ private void cleanLegacyEvent(WriteMetadataEvent event) {
+ this.eventBuffers.entrySet().stream()
+ .filter(entry -> entry.getKey().compareTo(event.getCheckpointId()) > 0)
Review Comment:
`event.getCheckpointId()) > 0` ? I understand that this is to clean up all
the remaining buffers before the current event. Maybe we need to clean up
smaller checkpointID ?
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