GitHub user loleek opened a pull request:
https://github.com/apache/flume/pull/125
bugfix: when loglevel is debug, Kafka Sink will throw NPE because of â¦
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) {
RecordMetadata metadata = new RecordMetadata(...);
thunk.callback.onCompletion(metadata, null);
} else {
thunk.callback.onCompletion(null, exception);
}
I've already created this issue on jira.
https://issues.apache.org/jira/browse/FLUME-3043?jql=project%20%3D%20FLUME
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/loleek/flume npe-kafka-sink
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flume/pull/125.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #125
----
commit dcad5ff6651c4c1714ebb7c9fae29d377096f48e
Author: dengkai02 <[email protected]>
Date: 2017-03-29T11:27:29Z
bugfix: when loglevel is debug, Kafka Sink will throw NPE because of
metadata can be null
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