[jira] [Work logged] (HIVE-23966) Minor query-based compaction always results in delta dirs with minWriteId=1

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-23966?focusedWorklogId=465080&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-465080 ]

ASF GitHub Bot logged work on HIVE-23966:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 31/Jul/20 16:16
            Start Date: 31/Jul/20 16:16
    Worklog Time Spent: 10m 
      Work Description: klcopp opened a new pull request #1346:
URL: https://github.com/apache/hive/pull/1346


   See HIVE-23966 for details.
   
   ### Does this PR introduce _any_ user-facing change?
   Minor compaction results will have different file names.
   
   ### How was this patch tested?
   Unit tests


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Issue Time Tracking
-------------------

            Worklog Id:     (was: 465080)
    Remaining Estimate: 0h
            Time Spent: 10m

> Minor query-based compaction always results in delta dirs with minWriteId=1
> ---------------------------------------------------------------------------
>
>                 Key: HIVE-23966
>                 URL: https://issues.apache.org/jira/browse/HIVE-23966
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Karen Coppage
>            Assignee: Karen Coppage
>            Priority: Major
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Minor compaction after major/IOW will result in directories that look like:
>  * base_z_v
>  * delta_1_y_v
>  * delete_delta_1_y_v
> Should be:
>  * base_z_v
>  * delta_(z+1)_y_v
>  * delete_delta_(z+1)_y_v
> Issues this causes:
> For example, after running insert overwrite, then minor compaction, major compaction will fail with the following error:
> {noformat}
> Found 2 equal splits: OrcSplit [hdfs://.../warehouse/tablespace/managed/hive/bucketed/delta_0000001_0000006_v0001058/bucket_00004,
> start=0, length=722, isOriginal=false, fileLength=722, hasFooter=false, hasBase=true, deltas=1] and OrcSplit 
> [hdfs://.../warehouse/tablespace/managed/hive/bucketed/base_0000001/bucket_00004_0,
> start=0, length=811, isOriginal=false, fileLength=811, hasFooter=false, hasBase=true, deltas=1]
> {noformat}
> or it can fail with:
> {noformat}
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Wrong sort order of Acid rows detected for the rows: org.apache.hadoop.hive.ql.udf.generic.GenericUDFValidateAcidSortOrder$WriteIdRowId@201be62b an
> d org.apache.hadoop.hive.ql.udf.generic.GenericUDFValidateAcidSortOrder$WriteIdRowId@5f97bd3f
> {noformat}



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