Tamas Mate has uploaded this change for review. ( http://gerrit.cloudera.org:8080/18353
Change subject: IMPALA-10737: Optimize the number of Iceberg API Metadata requests ...................................................................... IMPALA-10737: Optimize the number of Iceberg API Metadata requests Iceberg stores the table metadata next to the data files, when this is accessed through the Iceberg API a filesystem call is executed (HDFS, S3, ADLS). These calls were used in various places during query processing and this patch unifies the Iceberg metadata request in the CatalogD and ImpalaD: - CatalogD loads and caches the org.apache.iceberg.Table object. - When ImpalaDs request the Table metadata, the current catalog snapshot id is sent over and the ImpalaD loads and caches the org.apache.iceberg.Table object throught Iceberg API as well. This approach (loading the Iceberg table twice) was choosen because the org.apache.iceberg.Table could not be meaningfully serialized and deserialized. The result of a serialized Table is a lightweight SerializableTable object which is in the Iceberg core package. As a result REFRESH/INVALIDATE METADATA is required to reload any Iceberg metadata changes and the metadata load time is improved. This improvement is more significant for smaller queries, where the metadata request has larger impact on the query execution time. Additionally, the dependency on the Iceberg core package has been reduced and the TableMetadata/BaseTable class uses has been replaced with the Table class from the Iceberg api package in most places. Testing: - Passed Iceberg E2E tests. Change-Id: I5492e0cdb31602f0276029c2645d14ff5cb2f672 --- M common/thrift/CatalogObjects.thrift M common/thrift/CatalogService.thrift M fe/src/main/java/org/apache/impala/catalog/FeIcebergTable.java M fe/src/main/java/org/apache/impala/catalog/IcebergTable.java A fe/src/main/java/org/apache/impala/catalog/IcebergTableLoadingException.java M fe/src/main/java/org/apache/impala/catalog/iceberg/IcebergCtasTarget.java M fe/src/main/java/org/apache/impala/catalog/local/CatalogdMetaProvider.java M fe/src/main/java/org/apache/impala/catalog/local/DirectMetaProvider.java M fe/src/main/java/org/apache/impala/catalog/local/LocalIcebergTable.java M fe/src/main/java/org/apache/impala/catalog/local/LocalTable.java M fe/src/main/java/org/apache/impala/catalog/local/MetaProvider.java M fe/src/main/java/org/apache/impala/service/CatalogOpExecutor.java M fe/src/main/java/org/apache/impala/service/Frontend.java M fe/src/main/java/org/apache/impala/service/IcebergCatalogOpExecutor.java M fe/src/main/java/org/apache/impala/util/IcebergUtil.java M fe/src/test/java/org/apache/impala/catalog/local/LocalCatalogTest.java M testdata/workloads/functional-query/queries/QueryTest/iceberg-insert.test 17 files changed, 196 insertions(+), 212 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/53/18353/1 -- To view, visit http://gerrit.cloudera.org:8080/18353 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: newchange Gerrit-Change-Id: I5492e0cdb31602f0276029c2645d14ff5cb2f672 Gerrit-Change-Number: 18353 Gerrit-PatchSet: 1 Gerrit-Owner: Tamas Mate <tma...@apache.org> Gerrit-Reviewer: Zoltan Borok-Nagy <borokna...@cloudera.com>
