Tim Armstrong has submitted this change and it was merged. (
http://gerrit.cloudera.org:8080/16599 )
Change subject: IMPALA-10288: Implement DESCRIBE HISTORY for Iceberg tables
......................................................................
IMPALA-10288: Implement DESCRIBE HISTORY for Iceberg tables
The DESCRIBE HISTORY works for Iceberg tables and displays the
snapshot history of the table.
An example output:
DESCRIBE HISTORY iceberg_multi_snapshots;
+----------------------------+---------------------+---------------------+---------------------+
| creation_time | snapshot_id | parent_id |
is_current_ancestor |
+----------------------------+---------------------+---------------------+---------------------+
| 2020-10-13 14:01:07.234000 | 4400379706200951771 | NULL | TRUE
|
| 2020-10-13 14:01:19.307000 | 4221472712544505868 | 4400379706200951771 | TRUE
|
+----------------------------+---------------------+---------------------+---------------------+
The purpose here was to have similar output with this new feature as
what SparkSql returns for "SELECT * from tablename.history".
See "History" section of
https://iceberg.apache.org/spark/#inspecting-tables
Testing:
- iceberg-negative.test was extended to check that DESCRIBE HISTORY
is not applicable for non-Iceberg tables.
- iceberg-table-history.test: Covers basic usage of DESCRIBE
HISTORY. Tests on tables created with Impala and also with Spark.
Change-Id: I56a4b92c27e8e4a79109696cbae62735a00750e5
Reviewed-on: http://gerrit.cloudera.org:8080/16599
Reviewed-by: Zoltan Borok-Nagy <[email protected]>
Reviewed-by: wangsheng <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
---
M be/src/service/client-request-state.cc
M be/src/service/frontend.cc
M be/src/service/frontend.h
M common/thrift/Frontend.thrift
M fe/src/main/cup/sql-parser.cup
M fe/src/main/java/org/apache/impala/analysis/AnalysisContext.java
A fe/src/main/java/org/apache/impala/analysis/DescribeHistoryStmt.java
M fe/src/main/java/org/apache/impala/service/Frontend.java
M fe/src/main/java/org/apache/impala/service/JniFrontend.java
M fe/src/test/java/org/apache/impala/analysis/ParserTest.java
M testdata/data/README
M testdata/workloads/functional-query/queries/QueryTest/iceberg-negative.test
A
testdata/workloads/functional-query/queries/QueryTest/iceberg-table-history.test
M tests/query_test/test_iceberg.py
14 files changed, 283 insertions(+), 15 deletions(-)
Approvals:
Zoltan Borok-Nagy: Looks good to me, approved
wangsheng: Looks good to me, approved
Impala Public Jenkins: Verified
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: I56a4b92c27e8e4a79109696cbae62735a00750e5
Gerrit-Change-Number: 16599
Gerrit-PatchSet: 10
Gerrit-Owner: Gabor Kaszab <[email protected]>
Gerrit-Reviewer: Gabor Kaszab <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Qifan Chen <[email protected]>
Gerrit-Reviewer: Tim Armstrong <[email protected]>
Gerrit-Reviewer: Zoltan Borok-Nagy <[email protected]>
Gerrit-Reviewer: wangsheng <[email protected]>
