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https://issues.apache.org/jira/browse/DRILL-7388?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16958935#comment-16958935
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Arina Ielchiieva edited comment on DRILL-7388 at 10/24/19 2:39 PM:
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This is also relates to the following issue:
While Kafka storage plugin works with stream/topics with multiple messages, it
returns "No result found" if a topic contains only one message for query like
{code:java}
select * from kafka.`/s1:t1`
{code}
[~atlassdan] are you interested in submitting the PR with suggested fix?
was (Author: arina):
This is also related to the following issue:
While Kafka storage plugin works with stream/topics with multiple messages, it
returns "No result found" if a topic contains only one message for query like
{code:java}
select * from kafka.`/s1:t1`
{code}
[~atlassdan] are you interested in submitting the PR with suggested fix?
> Apache Drill Kafka Storage module fails to return results for partitions
> containing single offset record
> --------------------------------------------------------------------------------------------------------
>
> Key: DRILL-7388
> URL: https://issues.apache.org/jira/browse/DRILL-7388
> Project: Apache Drill
> Issue Type: Bug
> Affects Versions: 1.16.0
> Reporter: daniel kelly
> Priority: Major
>
> If a partition only contains one record - e.g.
> [topicName=myTopic, partitionId=117, startOffset=0, endOffset=1]
> no data is returned.
> I fixed this locally with the following code change in contrib/storage-kafka
> :-
> {code:java}
> git diff
> src/main/java/org/apache/drill/exec/store/kafka/KafkaRecordReader.java
> @@ -109,7 +109,7 @@ public class KafkaRecordReader extends
> AbstractRecordReader {
> currentMessageCount = 0;
>
> try {
> - while (currentOffset < subScanSpec.getEndOffset() - 1 &&
> msgItr.hasNext()) {
> + while (currentOffset < subScanSpec.getEndOffset() && msgItr.hasNext())
> {
> ConsumerRecord<byte[], byte[]> consumerRecord = msgItr.next();
> {code}
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