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https://issues.apache.org/jira/browse/HIVE-26498?focusedWorklogId=806580&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-806580
]
ASF GitHub Bot logged work on HIVE-26498:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 07/Sep/22 04:31
Start Date: 07/Sep/22 04:31
Worklog Time Spent: 10m
Work Description: kasakrisz commented on code in PR #3552:
URL: https://github.com/apache/hive/pull/3552#discussion_r964371311
##########
iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/HiveIcebergStorageHandler.java:
##########
@@ -977,4 +977,11 @@ public Configuration get() {
return conf;
}
}
+
+ @Override
+ public String getCurrentSnapshot(org.apache.hadoop.hive.ql.metadata.Table
hmsTable) {
Review Comment:
String gives us more flexibility:
* I had a version when more than one field was returned from the iceberg
snapshot serialized into json: snapshotId + sequenceNumber. Then it turned out
that the snapshotId is enough so far.
* Other than Iceberg storage formats may represents this value with another
type and serialize to String is an option.
Issue Time Tracking
-------------------
Worklog Id: (was: 806580)
Time Spent: 1.5h (was: 1h 20m)
> Implement MV maintenance with Iceberg sources using full rebuild
> ----------------------------------------------------------------
>
> Key: HIVE-26498
> URL: https://issues.apache.org/jira/browse/HIVE-26498
> Project: Hive
> Issue Type: Sub-task
> Components: Materialized views
> Reporter: Krisztian Kasa
> Assignee: Krisztian Kasa
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> {code}
> set hive.support.concurrency=true;
> set hive.txn.manager=org.apache.hadoop.hive.ql.lockmgr.DbTxnManager;
> create external table tbl_ice(a int, b string, c int) stored by iceberg
> stored as orc tblproperties ('format-version'='2');
> insert into tbl_ice values (1, 'one', 50), (2, 'two', 51), (3, 'three', 52),
> (4, 'four', 53), (5, 'five', 54);
> create materialized view mat1 as
> select b, c from tbl_ice where c > 52;
> insert into tbl_ice values (111, 'one', 55), (333, 'two', 56);
> explain cbo
> alter materialized view mat1 rebuild;
> alter materialized view mat1 rebuild;
> {code}
> MV full rebuild plan
> {code}
> CBO PLAN:
> HiveProject(b=[$1], c=[$2])
> HiveFilter(condition=[>($2, 52)])
> HiveTableScan(table=[[default, tbl_ice]], table:alias=[tbl_ice])
> {code}
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