Github user stevenzwu commented on a diff in the pull request:
https://github.com/apache/flink/pull/4357#discussion_r128642186
--- Diff:
flink-connectors/flink-connector-kafka-base/src/main/java/org/apache/flink/streaming/connectors/kafka/FlinkKafkaConsumerBase.java
---
@@ -517,16 +519,13 @@ public void
initializeState(FunctionInitializationContext context) throws Except
LOG.debug("Using the following offsets:
{}", restoredState);
}
}
- if (restoredState != null && restoredState.isEmpty()) {
- restoredState = null;
- }
} else {
LOG.info("No restore state for FlinkKafkaConsumer.");
}
}
@Override
- public void snapshotState(FunctionSnapshotContext context) throws
Exception {
+ public final void snapshotState(FunctionSnapshotContext context) throws
Exception {
--- End diff --
@tzulitai looks like the behavior was changed/fix in 1.3. Here is the
Kafka09Fetcher.java code from 1.2 that was causing the behavior I described
earlier.
{code}
// if checkpointing is enabled, we are not automatically
committing to Kafka.
kafkaProperties.setProperty(
ConsumerConfig.ENABLE_AUTO_COMMIT_CONFIG,
Boolean.toString(!enableCheckpointing));
{code}
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