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apache / impala / 1f9db9e05b2766d35c186e8e8b4e25b89f7d5793
commit1f9db9e05b2766d35c186e8e8b4e25b89f7d5793[log] [tgz]
authorAndrew Sherman <asherman@cloudera.com>Fri Mar 08 13:47:03 2024 -0800
committerImpala Public Jenkins <impala-public-jenkins@cloudera.com>Thu Mar 28 20:32:47 2024 +0000
tree5a7627d832756ce349b6ac549eeac0867c54e059
parentc01986d9e826c294773fdd7f9f34cb2f7c1c2b1f [diff]
IMPALA-12264: Add limit on number of HS2 sessions per user.

Add a new flag --max_hs2_sessions_per_user which sets a limit on the
number of Hiveserver2 sessions that can be concurrently opened by a
user on a coordinator. By default this value is -1, which disables
the new feature. An attempt to open more sessions than the new flag
value results in an error. This is implemented by maintaining a map of
users to a count of HS2 sessions.

If the per-user HS2 session counts are being limited in this way,
then the per-user counts are visible on the /sessions page of the
webui.

Add a new test case in test_session_expiration.py.

Change-Id: Idd28edc352102d89774f6ece5376e7c79ae41aa8
Reviewed-on: http://gerrit.cloudera.org:8080/21128
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
7 files changed
tree: 5a7627d832756ce349b6ac549eeac0867c54e059
  1. .devcontainer/
  2. be/
  3. bin/
  4. cmake_modules/
  5. common/
  6. docker/
  7. docs/
  8. fe/
  9. infra/
  10. java/
  11. lib/
  12. package/
  13. security/
  14. shell/
  15. ssh_keys/
  16. testdata/
  17. tests/
  18. www/
  19. .clang-format
  20. .clang-tidy
  21. .gitattributes
  22. .gitignore
  23. buildall.sh
  24. CMakeLists.txt
  25. EXPORT_CONTROL.md
  26. LICENSE.txt
  27. LOGS.md
  28. NOTICE.txt
  29. README-build.md
  30. README.md
  31. setup.cfg
README.md

Welcome to Impala

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:

More about Impala

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.

Supported Platforms

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.

Supported OS Distributions

Impala runs on Linux systems only. The supported distros are

  • Ubuntu 16.04/18.04
  • CentOS/RHEL 7/8

Other systems, e.g. SLES12, may also be supported but are not tested by the community.

Export Control Notice

This distribution uses cryptographic software and may be subject to export controls. Please refer to EXPORT_CONTROL.md for more information.

Build Instructions

See Impala's developer documentation to get started.

Detailed build notes has some detailed information on the project layout and build.