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https://issues.apache.org/jira/browse/FLUME-3043?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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dengkai updated FLUME-3043:
---------------------------
Attachment: FLUME-3043.patch
> KafkaSink SinkCallback throw NullPointerException when Log4J leval is debug
> ---------------------------------------------------------------------------
>
> Key: FLUME-3043
> URL: https://issues.apache.org/jira/browse/FLUME-3043
> Project: Flume
> Issue Type: Bug
> Components: Sinks+Sources
> Affects Versions: v1.7.0
> Reporter: dengkai
> Assignee: dengkai
> Fix For: v1.8.0
>
> Attachments: FLUME-3043.patch
>
>
> When we send a event with SinkCallback to kafka under DEBUG level of log4j,
> if kafka reponses a result with exception but not a RecordMetadata. Kafka
> Sink will throw NPE.
> code in SinkCallback:
> if (logger.isDebugEnabled()) {
> long eventElapsedTime = System.currentTimeMillis() - startTime;
> logger.debug("Acked message partition:{} ofset:{}",
> metadata.partition(), metadata.offset());
> logger.debug("Elapsed time for send: {}", eventElapsedTime);
> }
> code in Kafka Producer:
> if (exception == null) {
> // If the timestamp returned by server is NoTimestamp, that means
> CreateTime is used. Otherwise LogAppendTime is used.
> RecordMetadata metadata = new RecordMetadata(this.topicPartition,
> baseOffset, thunk.future.relativeOffset(),
> timestamp ==
> Record.NO_TIMESTAMP ? thunk.future.timestamp() : timestamp,
>
> thunk.future.checksum(),
>
> thunk.future.serializedKeySize(),
>
> thunk.future.serializedValueSize());
> thunk.callback.onCompletion(metadata, null);
> } else {
> thunk.callback.onCompletion(null, exception);
> }
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