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Posted to issues@spark.apache.org by "bharath kumar avusherla (JIRA)" <ji...@apache.org> on 2018/08/08 03:18:00 UTC

[jira] [Commented] (SPARK-25052) Is there any possibility that spark structured streaming generate duplicates in the output?

    [ https://issues.apache.org/jira/browse/SPARK-25052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16572608#comment-16572608 ] 

bharath kumar avusherla commented on SPARK-25052:
-------------------------------------------------

i also thought about it. Hence I created it as question. Anyhow i will send the question to the mailing list.

> Is there any possibility that spark structured streaming generate duplicates in the output?
> -------------------------------------------------------------------------------------------
>
>                 Key: SPARK-25052
>                 URL: https://issues.apache.org/jira/browse/SPARK-25052
>             Project: Spark
>          Issue Type: Question
>          Components: Spark Core
>    Affects Versions: 2.3.0
>            Reporter: bharath kumar avusherla
>            Priority: Minor
>
> We recently observed that the spark structured streaming generated duplicates in the output when reading from Kafka topic and storing the output to the S3 (and checkpointing in S3).  We ran into this issue twice. This is not reproducible. Is there anyone has ever faced this kind of issue before? Is this because of S3 eventual consistency?



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