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https://issues.apache.org/jira/browse/SQOOP-2811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15126953#comment-15126953
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Hudson commented on SQOOP-2811:
-------------------------------

SUCCESS: Integrated in Sqoop2 #1001 (See 
[https://builds.apache.org/job/Sqoop2/1001/])
SQOOP-2811: Sqoop2: Extracting sequence files may result in duplicates (jarcec: 
[https://git-wip-us.apache.org/repos/asf?p=sqoop.git&a=commit&h=118aa7c4f9cb7ed3a81ce792e7bf56d31f9107e5])
* 
connector/connector-hdfs/src/main/java/org/apache/sqoop/connector/hdfs/HdfsExtractor.java
* 
connector/connector-hdfs/src/main/java/org/apache/sqoop/connector/hdfs/SqoopTaskAttemptContext.java
* 
connector/connector-hdfs/src/main/java/org/apache/sqoop/connector/hdfs/HdfsPartition.java


> Sqoop2: Extracting sequence files may result in duplicates
> ----------------------------------------------------------
>
>                 Key: SQOOP-2811
>                 URL: https://issues.apache.org/jira/browse/SQOOP-2811
>             Project: Sqoop
>          Issue Type: Bug
>    Affects Versions: 1.99.6
>            Reporter: Abraham Fine
>            Assignee: Abraham Fine
>             Fix For: 1.99.7
>
>         Attachments: SQOOP-2811.patch
>
>
> In the hdfs extractor we use:
> {code:java}
>     if (start > filereader.getPosition()) {
>       filereader.sync(start); // sync to start
>     }
> {code}
> to jump to the correct point in the sequence file that we want to extract.
> If the sequence file is small, multiple start points may `sync` to the same 
> point and we could end up extracting the same record multiple times.



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