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From "dengkai (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (FLUME-3043) KafkaSink SinkCallback throw NullPointerException when Log4J leval is debug
Date Wed, 18 Jan 2017 03:57:26 GMT

     [ https://issues.apache.org/jira/browse/FLUME-3043?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

dengkai updated FLUME-3043:
---------------------------
    Attachment:     (was: 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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