commit | 6c0c26146d956ad771cee27283c1371b9c23adce | [log] [tgz] |
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author | wzhou-code <wzhou@cloudera.com> | Mon Mar 11 23:28:57 2024 -0700 |
committer | Wenzhe Zhou <wzhou@cloudera.com> | Wed Mar 13 20:40:26 2024 +0000 |
tree | b0105c13f8b6cb5a5e9795c9e2dcccb67b8fbcb6 | |
parent | ada4090e0989805ed884e135356c6b688e7ccc96 [diff] |
IMPALA-12896: Avoid JDBC table to be set as transactional table In some deployment environment, JDBC tables are set as transactional tables by default. This causes catalogd failed to load the metadata for JDBC tables. This patch explicitly add table properties with "transactional=false" for JDBC table to avoid the JDBC to be set as transactional table. The operations on JDBC table are processed only on coordinator. The processed rows should be estimated as 0 for DataSourceScanNode by planner so that coordinator-only query plans are generated for simple queries on JDBC tables and queries could be executed without invoking executor nodes. Also adds Preconditions.check to make sure numNodes equals 1 for DataSourceScanNode. Updates FileSystemUtil.copyFileFromUriToLocal() function to write log message for all types of exceptions. Testing: - Fixed planer tests for data source tables. - Ran end-to-end tests of JDBC tables with query option 'exec_single_node_rows_threshold' as default value 100. - Passed core-tests. Change-Id: I556faeda923a4a11d4bef8c1250c9616f77e6fa6 Reviewed-on: http://gerrit.cloudera.org:8080/21141 Reviewed-by: Riza Suminto <riza.suminto@cloudera.com> Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Lightning-fast, distributed SQL queries for petabytes of data stored in open data and table formats.
Impala is a modern, massively-distributed, massively-parallel, C++ query engine that lets you analyze, transform and combine data from a variety of data sources:
The fastest way to try out Impala is a quickstart Docker container. You can try out running queries and processing data sets in Impala on a single machine without installing dependencies. It can automatically load test data sets into Apache Kudu and Apache Parquet formats and you can start playing around with Apache Impala SQL within minutes.
To learn more about Impala as a user or administrator, or to try Impala, please visit the Impala homepage. Detailed documentation for administrators and users is available at Apache Impala documentation.
If you are interested in contributing to Impala as a developer, or learning more about Impala's internals and architecture, visit the Impala wiki.
Impala only supports Linux at the moment. Impala supports x86_64 and has experimental support for arm64 (as of Impala 4.0). Impala Requirements contains more detailed information on the minimum CPU requirements.
Impala runs on Linux systems only. The supported distros are
Other systems, e.g. SLES12, may also be supported but are not tested by the community.
This distribution uses cryptographic software and may be subject to export controls. Please refer to EXPORT_CONTROL.md for more information.
See Impala's developer documentation to get started.
Detailed build notes has some detailed information on the project layout and build.