[
https://issues.apache.org/jira/browse/HIVE-21172?focusedWorklogId=695610&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-695610
]
ASF GitHub Bot logged work on HIVE-21172:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 14/Dec/21 09:56
Start Date: 14/Dec/21 09:56
Worklog Time Spent: 10m
Work Description: kgyrtkirk commented on a change in pull request #2857:
URL: https://github.com/apache/hive/pull/2857#discussion_r768476035
##########
File path: ql/src/test/results/clientpositive/llap/masking_acid_no_masking.q.out
##########
@@ -54,8 +53,9 @@ POSTHOOK: Input: default@masking_acid_no_masking
POSTHOOK: Input: default@nonacid_n0
POSTHOOK: Output: default@masking_acid_no_masking
POSTHOOK: Output: default@masking_acid_no_masking
-POSTHOOK: Output: default@masking_acid_no_masking
POSTHOOK: Output: default@merge_tmp_table
POSTHOOK: Lineage: masking_acid_no_masking.key SIMPLE
[(nonacid_n0)s.FieldSchema(name:key, type:int, comment:null), ]
+POSTHOOK: Lineage: masking_acid_no_masking.key SIMPLE
[(nonacid_n0)s.FieldSchema(name:key, type:int, comment:null), ]
Review comment:
is this a duplicate?
##########
File path:
itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/txn/compactor/TestCrudCompactorOnTez.java
##########
@@ -1711,13 +1713,13 @@ public void
testMajorCompactionAfterTwoMergeStatements() throws Exception {
// Verify contents of bucket files.
List<String> expectedRsBucket0 =
Arrays.asList("{\"writeid\":1,\"bucketid\":536870912,\"rowid\":3}\t4\tvalue_4",
- "{\"writeid\":2,\"bucketid\":536870912,\"rowid\":0}\t6\tvalue_6",
- "{\"writeid\":2,\"bucketid\":536870913,\"rowid\":2}\t3\tnewvalue_3",
- "{\"writeid\":3,\"bucketid\":536870912,\"rowid\":0}\t8\tvalue_8",
- "{\"writeid\":3,\"bucketid\":536870913,\"rowid\":0}\t5\tnewestvalue_5",
- "{\"writeid\":3,\"bucketid\":536870913,\"rowid\":1}\t7\tnewestvalue_7",
- "{\"writeid\":3,\"bucketid\":536870913,\"rowid\":2}\t1\tnewestvalue_1",
-
"{\"writeid\":3,\"bucketid\":536870913,\"rowid\":3}\t2\tnewestvalue_2");
+ "{\"writeid\":2,\"bucketid\":536870913,\"rowid\":2}\t3\tnewvalue_3",
Review comment:
seeing a change like this I wonder how much value this test adds...
##########
File path:
ql/src/java/org/apache/hadoop/hive/ql/parse/MergeSemanticAnalyzer.java
##########
@@ -441,6 +442,11 @@ private String handleUpdate(ASTNode
whenMatchedUpdateClause, StringBuilder rewri
default:
//do nothing
}
+
+ if ("`default`".equalsIgnoreCase(rhsExp.trim())) {
+ rhsExp = MapUtils.getString(colNameToDefaultConstraint, name,
"null");
Review comment:
iiuc this makes changes the column value to the default if we see the
"default" in the query
I see that this also work for a plain insert:
```
create table q2(a string default 'asd');
insert into q2 values(`default`)
select * from q2;
```
however I think the standard suggest to use the `DEFAULT` keyword and not as
a string literal; in Hive we seem to also "support" the "default" as a string
literal to be interpreted as default.
I think because of various reasons - the default keyword becomes the string
default at some point and it works like that right now.
could you open a follow-up to fix the `default` literal's handling?
##########
File path: ql/src/test/results/clientpositive/llap/explain_locks.q.out
##########
@@ -233,20 +221,14 @@ POSTHOOK: Input: default@target@p=2/q=2
POSTHOOK: Output: default@merge_tmp_table
POSTHOOK: Output: default@target
POSTHOOK: Output: default@target@p=1/q=2
-POSTHOOK: Output: default@target@p=1/q=2
-POSTHOOK: Output: default@target@p=1/q=3
POSTHOOK: Output: default@target@p=1/q=3
POSTHOOK: Output: default@target@p=2/q=2
-POSTHOOK: Output: default@target@p=2/q=2
LOCK INFORMATION:
default.source -> SHARED_READ
default.target.p=1/q=2 -> SHARED_READ
default.target.p=1/q=3 -> SHARED_READ
default.target.p=2/q=2 -> SHARED_READ
default.target.p=2/q=2 -> SHARED_WRITE
-default.target.p=2/q=2 -> SHARED_WRITE
Review comment:
I wonder why were these lock duplicated?
##########
File path:
ql/src/test/results/clientpositive/llap/acid_direct_update_delete_with_merge.q.out
##########
@@ -112,11 +110,13 @@ POSTHOOK: Input: default@transactions@tran_date=20170413
POSTHOOK: Output: default@merge_tmp_table
POSTHOOK: Output: default@transactions
POSTHOOK: Output: default@transactions@tran_date=20170410
-POSTHOOK: Output: default@transactions@tran_date=20170410
POSTHOOK: Output: default@transactions@tran_date=20170413
POSTHOOK: Output: default@transactions@tran_date=20170413
POSTHOOK: Output: default@transactions@tran_date=20170415
POSTHOOK: Lineage: merge_tmp_table.val EXPRESSION
[(transactions)t.FieldSchema(name:ROW__ID,
type:struct<writeId:bigint,bucketId:int,rowId:bigint>, comment:),
(transactions)t.FieldSchema(name:tran_date, type:string, comment:null), ]
+POSTHOOK: Lineage: transactions PARTITION(tran_date=20170413).id SIMPLE
[(merge_source)s.FieldSchema(name:id, type:int, comment:null), ]
Review comment:
is this a duplicate lineage entry?
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Issue Time Tracking
-------------------
Worklog Id: (was: 695610)
Time Spent: 20m (was: 10m)
> DEFAULT keyword handling in MERGE UPDATE clause issues
> ------------------------------------------------------
>
> Key: HIVE-21172
> URL: https://issues.apache.org/jira/browse/HIVE-21172
> Project: Hive
> Issue Type: Sub-task
> Components: SQL, Transactions
> Affects Versions: 4.0.0
> Reporter: Eugene Koifman
> Assignee: Krisztian Kasa
> Priority: Major
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> once HIVE-21159 lands, enable {{HiveConf.MERGE_SPLIT_UPDATE}} and run these
> tests.
> TestMiniLlapLocalCliDriver.testCliDriver[sqlmerge_stats]
> mvn test -Dtest=TestMiniLlapLocalCliDriver
> -Dqfile=insert_into_default_keyword.q
> Merge is rewritten as a multi-insert. When Update clause has DEFAULT, it's
> not properly replaced with a value in the muli-insert - it's treated as a
> literal
> {noformat}
> INSERT INTO `default`.`acidTable` -- update clause(insert part)
> SELECT `t`.`key`, `DEFAULT`, `t`.`value`
> WHERE `t`.`key` = `s`.`key` AND `s`.`key` > 3 AND NOT(`s`.`key` < 3)
> {noformat}
> See {{LOG.info("Going to reparse <" + originalQuery + "> as \n<" +
> rewrittenQueryStr.toString() + ">");}} in hive.log
> {{MergeSemanticAnalyzer.replaceDefaultKeywordForMerge()}} is only called in
> {{handleInsert}} but not {{handleUpdate()}}. Why does issue only show up with
> {{MERGE_SPLIT_UPDATE}}?
> Once this is fixed, HiveConf.MERGE_SPLIT_UPDATE should be true by default
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