[jira] [Updated] (STORM-2720) Add timestamp based FirstPollOffsetStrategy in KafkaTridentSpoutOpaque

["Ethan Li (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/STORM-2720?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ethan Li updated STORM-2720:
----------------------------
    Fix Version/s:     (was: 2.0.1)
                   2.1.0

> Add timestamp based FirstPollOffsetStrategy in KafkaTridentSpoutOpaque
> ----------------------------------------------------------------------
>
>                 Key: STORM-2720
>                 URL: https://issues.apache.org/jira/browse/STORM-2720
>             Project: Apache Storm
>          Issue Type: Improvement
>          Components: storm-kafka-client, trident
>    Affects Versions: 1.1.1
>            Reporter: Janith Kaiprath Valiyalappil
>            Assignee: Janith Kaiprath Valiyalappil
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 2.1.0
>
>          Time Spent: 10h
>  Remaining Estimate: 0h
>
> Offsets for a given partition at a particular timestamp can now be found using offsetsForTimes API. https://kafka.apache.org/0110/javadoc/org/apache/kafka/clients/consumer/KafkaConsumer.html#offsetsForTimes(java.util.Map).
> One way to make use of this api would be to :
> Add a new option for FirstPollOffsetStrategy called TIMESTAMP 
> Add a new startTimeStamp option to KafkaSpoutConfig, which would be used only when FirstPollOffsetStrategy is set to TIMESTAMP.
> Later in the KafkaTridentSpoutEmitter, when we do the first seek, we can do something like :
> {code}
>             if(firstPollOffsetStrategy.equals(TIMESTAMP)) {
>                 try {
>                     startTimeStampOffset =
>                         kafkaConsumer.offsetsForTimes(Collections.singletonMap(tp, startTimeStamp)).get(tp).offset();
>                 } catch (IllegalArgumentException e) {
>                     LOG.error("Illegal timestamp {} provided for tp {} ",startTimeStamp,tp.toString());
>                 } catch (UnsupportedVersionException e) {
>                     LOG.error("Kafka Server do not support offsetsForTimes(), probably < 0.10.1",e);
>                 }
>                 if(startTimeStampOffset!=null) {
>                     LOG.info("Kafka consumer offset reset for TopicPartition {}, TimeStamp {}, Offset {}",tp,startTimeStamp,startTimeStampOffset);
>                     kafkaConsumer.seek(tp, startTimeStampOffset);
>                 } else {
>                     LOG.info("Kafka consumer offset reset by timestamp failed for TopicPartition {}, TimeStamp {}, Offset {}. Restart with a different Strategy ",tp,startTimeStamp,startTimeStampOffset);
>                 }
>             }
> {code}



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