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 ⦠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 <dengka...@baidu.com> Date: 2017-03-29T11:27:29Z bugfix: when loglevel is debug, Kafka Sink will throw NPE because of metadata can be null ---- --- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. ---