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apache / impala / ba32d70891fd68c5c1234ed543b74c51661bf272
commitba32d70891fd68c5c1234ed543b74c51661bf272[log] [tgz]
authorMichael Smith <michael.smith@cloudera.com>Wed Apr 17 16:54:00 2024 -0700
committerMichael Smith <michael.smith@cloudera.com>Fri Apr 26 23:45:56 2024 +0000
treeba65d3d8fa11226492acca5b7942f398815478c9
parent73a9ef9c4c00419b5082f355d96961c5971634d6 [diff]
IMPALA-13012: Lower default query_log_max_queued

Sets the query_log_max_queued default such that

  query_log_max_queued * num_columns(49) < statement_expression_limit

to avoid triggering e.g.

  AnalysisException: Exceeded the statement expression limit (250000)
  Statement has 370039 expressions.

Also increases statement_expression_limit for insertion to avoid an
error if query_log_max_queued is changed.

Logs time taken to write to the queries table for help with debugging
and adds histogram "impala-server.completed-queries.write-durations".

Fixes InternalServer so it uses 'default_query_options'.

Change-Id: I6535675307d88cb65ba7d908f3c692e0cf3259d7
Reviewed-on: http://gerrit.cloudera.org:8080/21351
Reviewed-by: Michael Smith <michael.smith@cloudera.com>
Tested-by: Michael Smith <michael.smith@cloudera.com>
Reviewed-by: Riza Suminto <riza.suminto@cloudera.com>
13 files changed
tree: ba65d3d8fa11226492acca5b7942f398815478c9
  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.