Zoltan Borok-Nagy has submitted this change and it was merged. ( 
http://gerrit.cloudera.org:8080/18371 )

Change subject: IMPALA-11214: Impala reloads Iceberg tables per each data file
......................................................................

IMPALA-11214: Impala reloads Iceberg tables per each data file

Due to a bug in IMPALA-11053, Impala reloads the Iceberg table per each
data file. This causes a serious perf regression for table loads.

This patch avoids reloading the Iceberg tables for each data file.

Testing:
 * added exhaustive e2e test

Change-Id: I0ed5a8c46c97aaa873dd1e925eed83d4573cf208
Reviewed-on: http://gerrit.cloudera.org:8080/18371
Reviewed-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
---
M fe/src/main/java/org/apache/impala/catalog/FeIcebergTable.java
M fe/src/main/java/org/apache/impala/planner/IcebergScanNode.java
M fe/src/main/java/org/apache/impala/util/IcebergUtil.java
M tests/query_test/test_iceberg.py
4 files changed, 35 insertions(+), 11 deletions(-)

Approvals:
  Impala Public Jenkins: Looks good to me, approved; Verified

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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: I0ed5a8c46c97aaa873dd1e925eed83d4573cf208
Gerrit-Change-Number: 18371
Gerrit-PatchSet: 3
Gerrit-Owner: Zoltan Borok-Nagy <borokna...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Gerrit-Reviewer: Tamas Mate <tma...@apache.org>
Gerrit-Reviewer: Zoltan Borok-Nagy <borokna...@cloudera.com>

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