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Posted to jira@kafka.apache.org by GitBox <gi...@apache.org> on 2020/05/15 01:21:06 UTC
[GitHub] [kafka] mjsax commented on a change in pull request #8670: KAFKA-10001: Should trigger store specific callback if it is also a listener
mjsax commented on a change in pull request #8670:
URL: https://github.com/apache/kafka/pull/8670#discussion_r425514013
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File path: streams/src/main/java/org/apache/kafka/streams/processor/internals/StoreChangelogReader.java
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@@ -522,6 +523,12 @@ private void restoreChangelog(final ChangelogMetadata changelogMetadata) {
// do not trigger restore listener if we are processing standby tasks
if (changelogMetadata.stateManager.taskType() == Task.TaskType.ACTIVE) {
try {
+ // first trigger the store's specific listener if its registered callback is also an lister,
+ // then trigger the user registered global listener
+ final StateRestoreCallback restoreCallback = changelogMetadata.storeMetadata.restoreCallback();
+ if (restoreCallback instanceof StateRestoreListener)
Review comment:
Nit: opening/closing `{ }` are missing
##########
File path: streams/src/main/java/org/apache/kafka/streams/processor/internals/StoreChangelogReader.java
##########
@@ -522,6 +523,12 @@ private void restoreChangelog(final ChangelogMetadata changelogMetadata) {
// do not trigger restore listener if we are processing standby tasks
if (changelogMetadata.stateManager.taskType() == Task.TaskType.ACTIVE) {
try {
+ // first trigger the store's specific listener if its registered callback is also an lister,
+ // then trigger the user registered global listener
+ final StateRestoreCallback restoreCallback = changelogMetadata.storeMetadata.restoreCallback();
Review comment:
Nit: we get `storeMetadata` above already (similar below) also the `if` is redundant -- should we unify it?
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