dengkai created FLUME-3043:
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Summary: 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
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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