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https://issues.apache.org/jira/browse/HIVE-15199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15666900#comment-15666900
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Rajesh Balamohan commented on HIVE-15199:
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This is covered in test cases in branch-2 for S3
https://github.com/apache/hadoop/blob/branch-2/hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/ITestS3AFileSystemContract.java#L103
Need to change Hive to make use of {{destFs.exists}} and do a rename.
> INSERT INTO data on S3 is replacing the old rows with the new ones
> ------------------------------------------------------------------
>
> Key: HIVE-15199
> URL: https://issues.apache.org/jira/browse/HIVE-15199
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: Sergio Peña
> Assignee: Sergio Peña
> Priority: Critical
>
> Any INSERT INTO statement run on S3 tables and when the scratch directory is
> saved on S3 is deleting old rows of the table.
> {noformat}
> hive> set hive.blobstore.use.blobstore.as.scratchdir=true;
> hive> create table t1 (id int, name string) location 's3a://spena-bucket/t1';
> hive> insert into table t1 values (1,'name1');
> hive> select * from t1;
> 1 name1
> hive> insert into table t1 values (2,'name2');
> hive> select * from t1;
> 2 name2
> {noformat}
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