[ https://issues.apache.org/jira/browse/KAFKA-4269?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Bill Bejeck updated KAFKA-4269: ------------------------------- Description: I discovered this issue while doing testing for for KAFKA-4114. KAFKA-4131 fixed the issue of a _single_ KStream with a regex source on partitioned topics across multiple consumers. //KAFKA-4131 fixed this case assuming an "foo*" topics are partitioned KStream kstream = builder.source(Pattern.compile("foo.*")); KafkaStream stream = new KafkaStreams(builder, props); stream.start(); This is a new issue where there are _multiple_ KStream instances (and one has a regex source) within a single KafkaStreams object. When running the second or "following" consumer there are NPE errors generated in the RecordQueue.addRawRecords method when attempting to consume records. For example: KStream kstream = builder.source(Pattern.compile("foo.*")); KStream kstream2 = builder.source(.....): //can be regex or named topic sources KafkaStream stream = new KafkaStreams(builder, props); stream.start(); By adding an additional KStream instance like above (whether Regex or Named topic) causes a NPE when run as "follower" >From my initial debugging I can see the TopicPartition assignments being set >on the "follower" KafkaStreams instance, but need to track down why and where >all assignments aren't being set. was: I discovered this issue while doing testing for for KAFKA-4114. KAFKA-4131 fixed the issue of a _single_ KStream with a regex source on partitioned topics across multiple consumers. //KAFKA-4131 fixed this case assuming an "foo*" topics are partitioned KStream kstream = builder.source(Pattern.compile("foo.*")); KafkaStream stream = new KafkaStreams(builder, props); stream.start(); This is a new issue where there are _multiple_ KStream instances (and one has a regex source) within a single KafkaStreams object. When running the second or "following" consumer there are NPE errors generated in the RecordQueue.addRawRecords method when attempting to consume records. For example: KStream kstream = builder.source(Pattern.compile("foo.*")); KStream kstream2 = builder.source(.....): //can be regex or named topic sources KafkaStream stream = new KafkaStreams(builder, props); stream.start(); By adding an additional KStream instance like above (whether Regex or Named topic) causes a NPE when run as "follower" >From my initial debugging I can see the TopicPartition assignments being set >on the "follower" KafkaStreams instance, but need to track down why and where all assignments aren't being set. > Multiple KStream instances with at least one Regex source causes NPE when > using multiple consumers > -------------------------------------------------------------------------------------------------- > > Key: KAFKA-4269 > URL: https://issues.apache.org/jira/browse/KAFKA-4269 > Project: Kafka > Issue Type: Bug > Components: streams > Affects Versions: 0.10.1.0 > Reporter: Bill Bejeck > Assignee: Bill Bejeck > > I discovered this issue while doing testing for for KAFKA-4114. > KAFKA-4131 fixed the issue of a _single_ KStream with a regex source on > partitioned topics across multiple consumers. > //KAFKA-4131 fixed this case assuming an "foo*" topics are partitioned > KStream kstream = builder.source(Pattern.compile("foo.*")); > KafkaStream stream = new KafkaStreams(builder, props); > stream.start(); > This is a new issue where there are _multiple_ > KStream instances (and one has a regex source) within a single KafkaStreams > object. When running the second or "following" > consumer there are NPE errors generated in the RecordQueue.addRawRecords > method when attempting to consume records. > For example: > KStream kstream = builder.source(Pattern.compile("foo.*")); > KStream kstream2 = builder.source(.....): //can be regex or named topic > sources > KafkaStream stream = new KafkaStreams(builder, props); > stream.start(); > By adding an additional KStream instance like above (whether Regex or Named > topic) causes a NPE when run as "follower" > From my initial debugging I can see the TopicPartition assignments being set > on the "follower" KafkaStreams instance, but need to track down why and where > all assignments aren't being set. -- This message was sent by Atlassian JIRA (v6.3.4#6332)