[ 
https://issues.apache.org/jira/browse/HIVE-21160?focusedWorklogId=777514&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-777514
 ]

ASF GitHub Bot logged work on HIVE-21160:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 02/Jun/22 13:19
            Start Date: 02/Jun/22 13:19
    Worklog Time Spent: 10m 
      Work Description: kasakrisz commented on code in PR #2855:
URL: https://github.com/apache/hive/pull/2855#discussion_r887943545


##########
ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java:
##########
@@ -8292,8 +8294,8 @@ private WriteEntity generateTableWriteEntity(String dest, 
Table dest_tab,
     if ((dpCtx == null || dpCtx.getNumDPCols() == 0)) {
       output = new WriteEntity(dest_tab, determineWriteType(ltd, dest));
       if (!outputs.add(output)) {
-        if(!((this instanceof MergeSemanticAnalyzer) &&
-            conf.getBoolVar(ConfVars.MERGE_SPLIT_UPDATE))) {
+        if(!((this instanceof MergeSemanticAnalyzer || this instanceof 
UpdateDeleteSemanticAnalyzer) &&

Review Comment:
   Extracted to instance method.



##########
itests/hive-unit/src/test/java/org/apache/hive/jdbc/TestJdbcDriver2.java:
##########
@@ -251,6 +252,44 @@ public void testExceucteUpdateCounts() throws Exception {
     assertEquals("1 row PreparedStatement update", 1, count);
   }
 
+  @Test
+  public void testExceucteMergeCounts() throws Exception {
+    testExceucteMergeCounts(true);
+  }
+
+  @Test
+  public void testExceucteMergeCountsNoSplitUpdate() throws Exception {
+    testExceucteMergeCounts(false);
+  }
+
+  private void testExceucteMergeCounts(boolean splitUpdateEarly) throws 
Exception {
+
+    Statement stmt =  con.createStatement();
+    stmt.execute("set " + ConfVars.MERGE_SPLIT_UPDATE.varname + "=" + 
splitUpdateEarly);
+    stmt.execute("set " + ConfVars.HIVE_SUPPORT_CONCURRENCY.varname + "=true");

Review Comment:
   Changed to SPLIT_UPDATE





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

    Worklog Id:     (was: 777514)
    Time Spent: 4h 20m  (was: 4h 10m)

> Rewrite Update statement as Multi-insert and do Update split early
> ------------------------------------------------------------------
>
>                 Key: HIVE-21160
>                 URL: https://issues.apache.org/jira/browse/HIVE-21160
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Transactions
>    Affects Versions: 3.0.0
>            Reporter: Eugene Koifman
>            Assignee: Krisztian Kasa
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 4h 20m
>  Remaining Estimate: 0h
>




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