mynameborat commented on a change in pull request #912: SEP-19 : Refactoring
sideInputs from SamzaContainer to ContainerStorageManager
URL: https://github.com/apache/samza/pull/912#discussion_r259963070
##########
File path:
samza-core/src/main/scala/org/apache/samza/storage/ContainerStorageManager.java
##########
@@ -364,14 +615,137 @@ public void start() throws SamzaException {
executorService.shutdown();
- // Stop consumers
- this.systemConsumers.values().forEach(systemConsumer ->
systemConsumer.stop());
+ // Stop store consumers
+ this.storeConsumers.values().forEach(systemConsumer ->
systemConsumer.stop());
// Now re-create persistent stores in read-write mode, leave
non-persistent stores as-is
recreatePersistentTaskStoresInReadWriteMode(this.containerModel,
jobContext, containerContext,
- storageEngineFactories, changelogSystemStreams, serdes,
taskInstanceMetrics, taskInstanceCollectors);
+ storageEngineFactories, serdes, taskInstanceMetrics,
taskInstanceCollectors);
- LOG.info("Restore complete");
+ LOG.info("Store Restore complete");
+ }
+
+ // Read sideInputs until all sideInputStreams are caughtup, so start() can
return
+ private void startSideInputs() {
+
+ LOG.info("SideInput Restore started");
+
+ // initialize the sideInputStorageManagers
+ getSideInputStorageManagers().forEach(sideInputStorageManager ->
sideInputStorageManager.init());
+
+ // start the checkpointing thread at the commit-ms frequency
+ sideInputsFlushFuture = sideInputsFlushExecutor.scheduleWithFixedDelay(new
Runnable() {
+ @Override
+ public void run() {
+ getSideInputStorageManagers().forEach(sideInputStorageManager ->
sideInputStorageManager.flush());
+ }
+ }, 0, new TaskConfig(config).getCommitMs(), TimeUnit.MILLISECONDS);
+
+ // set the latch to the number of sideInput SSPs
+ this.sideInputsCaughtUp = new
CountDownLatch(this.sideInputStorageManagers.keySet().size());
+
+ // register all side input SSPs with the consumers
+ for (SystemStreamPartition ssp : sideInputStorageManagers.keySet()) {
+ String startingOffset =
sideInputStorageManagers.get(ssp).getStartingOffset(ssp);
+
+ if (startingOffset == null) {
+ throw new SamzaException("No offset defined for SideInput
SystemStreamPartition : " + ssp);
+ }
+
+ // register startingOffset with the sysConsumer and register a metric
for it
+ sideInputSystemConsumers.register(ssp, startingOffset, null);
Review comment:
Can you sync up with Shanthoosh on this? Looks like we pass the `startPoint`
as null all the time.
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