simhadri-g commented on code in PR #4761:
URL: https://github.com/apache/hive/pull/4761#discussion_r1508014085
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iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/HiveIcebergOutputCommitter.java:
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@@ -416,12 +417,13 @@ private void commitTable(FileIO io, ExecutorService
executor, OutputTable output
Table table = null;
String branchName = null;
-
+ Expression filterExpr = Expressions.alwaysTrue();
for (JobContext jobContext : outputTable.jobContexts) {
JobConf conf = jobContext.getJobConf();
table = Optional.ofNullable(table).orElse(Catalogs.loadTable(conf,
catalogProperties));
branchName = conf.get(InputFormatConfig.OUTPUT_TABLE_SNAPSHOT_REF);
-
+ filterExpr = Expressions.and(filterExpr, (Expression)
SessionStateUtil.getResource(conf,
Review Comment:
The following example creates 2 job contexts per update query:
Thread 1: UPDATE customers SET first_name='Changed' WHERE
last_name='Taylor'
Thread 2: UPDATE customers SET first_name='Changed' WHERE
last_name='Donnel'
In the previous commit it would have multiple duplicate filters with AND.
But i this commit, i have added a if condition to update the the filter only if
they are different. This should help minimise the duplicate filters as seen in
image below.
<img width="1624" alt="image"
src="https://github.com/apache/hive/assets/26441677/fccb5ecb-8fe1-48d1-9e14-ecbc222961af";>
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