Commit Graph

1221 Commits

Author SHA1 Message Date
Gian Merlino 63ee69b4e8
Claim full support for Java 17. (#14384)
* Claim full support for Java 17.

No production code has changed, except the startup scripts.

Changes:

1) Allow Java 17 without DRUID_SKIP_JAVA_CHECK.

2) Include the full list of opens and exports on both Java 11 and 17.

3) Document that Java 17 is both supported and preferred.

4) Switch some tests from Java 11 to 17 to get better coverage on the
   preferred version.

* Doc update.

* Update errorprone.

* Update docker_build_containers.sh.

* Update errorprone in licenses.yaml.

* Add some more run-javas.

* Additional run-javas.

* Update errorprone.

* Suppress new errorprone error.

* Add exports and opens in ForkingTaskRunner for Java 11+.

Test, doc changes.

* Additional errorprone updates.

* Update for errorprone.

* Restore old fomatting in LdapCredentialsValidator.

* Copy bin/ too.

* Fix Java 15, 17 build line in docker_build_containers.sh.

* Update busybox image.

* One more java command.

* Fix interpolation.

* IT commandline refinements.

* Switch to busybox 1.34.1-glibc.

* POM adjustments, build and test one IT on 17.

* Additional debugging.

* Fix silly thing.

* Adjust command line.

* Add exports and opens one more place.

* Additional harmonization of strong encapsulation parameters.
2023-07-07 12:52:35 -07:00
Nhi Pham 4ee7b14f5f
update links in jupyter notebook (#14404) 2023-07-03 13:50:25 -07:00
Peter Marshall b6d6e3b827
Update start-druid-main.py (#14471)
Quick typo correction.
2023-06-23 14:07:24 +05:30
Sergio Ferragut 1a9aefbb0f
Move from Jupyter notebook to Jupyter Lab and introduce a notebook folder structure (#14419) 2023-06-21 09:11:00 -07:00
Gian Merlino 2b676ac7f8
Quieter KafkaSupervisors in all bundled log4j2.xml. (#14444)
Follow-up to #13392, which added this to a single log4j2.xml.
2023-06-19 12:04:11 +05:30
Charles Smith 37cb76d545
fixes dataSourceName varaible ref (#14340) 2023-05-30 13:15:27 -07:00
Charles Smith 88831b1dd0
Docs: Updates docker compose to turn off kraft which causes errors (#14335) 2023-05-24 09:33:32 -07:00
Katya Macedo 269137c682
Update Ingestion section (#14023)
Co-authored-by: Charles Smith <techdocsmith@gmail.com>
Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>
Co-authored-by: Victoria Lim <lim.t.victoria@gmail.com>
2023-05-19 09:42:27 -07:00
Victoria Lim 058eb99a8b
Docs: Update Docker profile and fix method call in `druidapi` tutorial (#14308) 2023-05-18 07:29:02 -07:00
Abhishek Radhakrishnan 7400ed3c93
Fixup data deletion tutorial docs (#14283)
Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>
2023-05-17 17:05:35 -07:00
Charles Smith c84c174caa
update tutorials to use clarify druid host location for Docker Compose + Druid version (#14295) 2023-05-17 15:41:02 -07:00
Victoria Lim 66d4ea014c
Docs: Tutorial for streaming ingestion using Kafka + Docker file to use with Jupyter tutorials (#13984) 2023-05-15 15:20:52 -07:00
Suneet Saldanha 84c11df980
Make LoggingEmitter more useful by using Markers (#14121)
* Make LoggingEmitter more useful

* Skip code coverage for facade classes

* fix spellcheck

* code review

* fix dependency

* logging.md

* fix checkstyle

* Add back jacoco version to main pom
2023-04-27 15:06:06 -07:00
imply-cheddar aaa6cc1883
Make the tasks run with only a single directory (#14063)
* Make the tasks run with only a single directory

There was a change that tried to get indexing to run on multiple disks
It made a bunch of changes to how tasks run, effectively hiding the
"safe" directory for tasks to write files into from the task code itself
making it extremely difficult to do anything correctly inside of a task.

This change reverts those changes inside of the tasks and makes it so that
only the task runners are the ones that make decisions about which
mount points should be used for storing task-related files.

It adds the config druid.worker.baseTaskDirs which can be used by the
task runners to know which directories they should schedule tasks inside of.
The TaskConfig remains the authoritative source of configuration for where
and how an individual task should be operating.
2023-04-13 00:45:02 -07:00
Abhishek Radhakrishnan 5ce1b0903e
Add basic security functions to druidapi (follow up to #14009) (#14055)
Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>
Co-authored-by: Paul Rogers <progers@apache.org>
2023-04-11 10:55:27 -07:00
Victoria Lim ede9903ff4
pip install for Python Druid API (#13938)
Broken test appears unrelated to this PR

* make druidapi pip installable

* include druidapi in prerequisites

* add license to setup.py

* updates from Paul's review

* note about editable install

* Apply suggestions from code review

Co-authored-by: 317brian <53799971+317brian@users.noreply.github.com>

* update install instructions

* found unrelated typos

* standardize install cmd with pip

---------

Co-authored-by: 317brian <53799971+317brian@users.noreply.github.com>
2023-03-21 11:37:39 -07:00
Gian Merlino f0fb094cc7
Fix start-druid for indexers. (#13891)
There was an unused parameter causing the unpack to fail.
2023-03-08 10:32:07 -08:00
Paul Rogers a580aca551
Python Druid API for use in notebooks (#13787)
Python Druid API for use in notebooks

Revises existing notebooks and readme to reference
the new API.

Notebook to explain the new API.

Split README into a console version and a notebook
version to work around lack of a nice display for
md files.

Update the REST API notebook to use simpler Requests calls

Converted the SQL tutorial to use the Python library

README file, converted to using properties

---------

Co-authored-by: Charles Smith <techdocsmith@gmail.com>
Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>
2023-03-04 18:25:19 -08:00
Katya Macedo 1595653e6f
docs: add a link for the Druid SQL tutorial (#13468)
* docs: add juptyer API tutorial for API and jupyter tutorial index (#3)

(cherry picked from commit aeb8d9e3390fa26d9c533dce0862295b80c58583)

* update prereqs and fix jupyterlab name

* Removing notebook since 13345 has it

13345 should be merged first

* update contributing instructions

* docs: link to the  Druid SQL tutorial

* Add link to partitioning

* fix merge conflict

* Saving

* Update docs/tutorials/tutorial-jupyter-index.md

* Remove partitioning

---------

Co-authored-by: 317brian <53799971+317brian@users.noreply.github.com>
Co-authored-by: brian.le <brian.le@imply.io>
Co-authored-by: Charles Smith <techdocsmith@gmail.com>
2023-02-22 09:36:13 -08:00
Katya Macedo 58d9720b00
docs: notebook only for SQL tutorial (#13465)
CI Failures seem unrelated to docs

* docs: notebook only for SQL tutorial

* Update logical operators section

* Fix typo

* Adopt review suggestions

* Update examples/quickstart/jupyter-notebooks/sql-tutorial.ipynb

* Update examples, add link to keywords

* Update after review

* Update per review comments

* Add links
2023-02-08 20:04:53 -08:00
AmatyaAvadhanula 0cf1fc3d55
Indexing on multiple disks (#13476)
* Initial commit

* Simple UTs

* Parameterize tests

* Parameterized tests for k8s task runner

* Fix restore bug

* Refactor TaskStorageDirTracker

* Change CliPeon args
2023-02-08 11:31:34 +05:30
Rishabh Singh a83d1cdf26
fix var name (#13657) 2023-01-11 21:15:30 +05:30
317brian d9c27d6102
docs: add index page and related stuff for jupyter tutorials (#13342) 2022-12-16 13:33:50 -08:00
Rishabh Singh f42722e627
Set monotonically increasing worker capacity in start-druid-main (#13581)
This commit updates the task memory allocation logic.
- min task count is 2 and max task count is number of cpus on the machine
- task count increases wrt total task memory
- task memory increases from 512m to 2g
2022-12-16 15:34:30 +05:30
Clint Wylie d9e5245ff0
allow string dimension indexer to handle byte[] as base64 strings (#13573)
This PR expands `StringDimensionIndexer` to handle conversion of `byte[]` to base64 encoded strings, rather than the current behavior of calling java `toString`. 

This issue was uncovered by a regression of sorts introduced by #13519, which updated the protobuf extension to directly convert stuff to java types, resulting in `bytes` typed values being converted as `byte[]` instead of a base64 string which the previous JSON based conversion created. While outputting `byte[]` is more consistent with other input formats, and preferable when the bytes can be consumed directly (such as complex types serde), when fed to a `StringDimensionIndexer`, it resulted in an ugly java `toString` because `processRowValsToUnsortedEncodedKeyComponent` is fed the output of `row.getRaw(..)`. Converting `byte[]` to a base64 string within `StringDimensionIndexer` is consistent with the behavior of calling `row.getDimension(..)` which does do this coercion (and why many tests on binary types appeared to be doing the expected thing).

I added some protobuf `bytes` tests, but they don't really hit the new `StringDimensionIndexer` behavior because they operate on the `InputRow` directly, and call `getDimension` to validate stuff. The parser based version still uses the old conversion mechanisms, so when not using a flattener incorrectly calls `toString` on the `ByteString`. I have encoded this behavior in the test for now, if we either update the parser to use the new flattener or just .. remove parsers we can remove this test stuff.
2022-12-16 14:50:17 +05:30
317brian 668d1fad6b
docs: notebook only for API tutorial (#13345)
* docs: notebook for API tutorial

* Apply suggestions from code review

Co-authored-by: Charles Smith <techdocsmith@gmail.com>

* address the other comments

* typo

* add commentary to outputs

* address feedback from will

* delete unnecessary comment

Co-authored-by: Charles Smith <techdocsmith@gmail.com>
2022-12-15 13:16:07 -08:00
Rishabh Singh 97bc0220c7
Update task memory computation in start-druid (#13563)
Changes:
* Use 80% of memory specified for running services (versus 50% earlier).
* Tasks get either 512m / 1024m or 2048m now (versus 512m or 2048m earlier). 
* Add direct memory for router.
2022-12-15 11:06:16 +05:30
Vadim Ogievetsky 2729e25295
Link to java docs (#13478)
* add link to page about selecting a JRE

* add link to script also

* simplify text
2022-12-14 11:45:23 -08:00
Rishabh Singh 8e386072e9
Druid automated quickstart: zookeeper in service list (#13550) 2022-12-12 10:29:43 -08:00
Rishabh Singh 4ebdfe226d
Druid automated quickstart (#13365)
* Druid automated quickstart

* remove conf/druid/single-server/quickstart/_common/historical/jvm.config

* Minor changes in python script

* Add lower bound memory for some services

* Additional runtime properties for services

* Update supervise script to accept command arguments, corresponding changes in druid-quickstart.py

* File end newline

* Limit the ability to start multiple instances of a service, documentation changes

* simplify script arguments

* restore changes in medium profile

* run-druid refactor

* compute and pass middle manager runtime properties to run-druid
supervise script changes to process java opts array
use argparse, leave free memory, logging

* Remove extra quotes from mm task javaopts array

* Update logic to compute minimum memory

* simplify run-druid

* remove debug options from run-druid

* resolve the config_path provided

* comment out service specific runtime properties which are computed in the code

* simplify run-druid

* clean up docs, naming changes

* Throw ValueError exception on illegal state

* update docs

* rename args, compute_only -> compute, run_zk -> zk

* update help documentation

* update help documentation

* move task memory computation into separate method

* Add validation checks

* remove print

* Add validations

* remove start-druid bash script, rename start-druid-main

* Include tasks in lower bound memory calculation

* Fix test

* 256m instead of 256g

* caffeine cache uses 5% of heap

* ensure min task count is 2, task count is monotonic

* update configs and documentation for runtime props in conf/druid/single-server/quickstart

* Update docs

* Specify memory argument for each profile in single-server.md

* Update middleManager runtime.properties

* Move quickstart configs to conf/druid/base, add bash launch script, support python2

* Update supervise script

* rename base config directory to auto

* rename python script, changes to pass repeated args to supervise

* remove exmaples/conf/druid/base dir

* add docs

* restore changes in conf dir

* update start-druid-auto

* remove hashref for commands in supervise script

* start-druid-main java_opts array is comma separated

* update entry point script name in python script

* Update help docs

* documentation changes

* docs changes

* update docs

* add support for running indexer

* update supported services list

* update help

* Update python.md

* remove dir

* update .spelling

* Remove dependency on psutil and pathlib

* update docs

* Update get_physical_memory method

* Update help docs

* update docs

* update method to get physical memory on python

* udpate spelling

* update .spelling

* minor change

* Minor change

* memory comptuation for indexer

* update start-druid

* Update python.md

* Update single-server.md

* Update python.md

* run python3 --version to check if python is installed

* Update supervise script

* start-druid: echo message if python not found

* update anchor text

* minor change

* Update condition in supervise script

* JVM not jvm in docs
2022-12-09 11:04:02 -08:00
Gian Merlino c61313f4c4
Quieter streaming supervisors. (#13392)
Eliminates two common sources of noise with Kafka supervisors that have
large numbers of tasks and partitions:

1) Log the report at DEBUG rather than INFO level at each run cycle.
   It can get quite large, and can be retrieved via API when needed.

2) Use log4j2.xml to quiet down the org.apache.kafka.clients.consumer.internals
   package. Avoids a log message per-partition per-minute as part of seeking
   to the latest offset in the reporting thread. In the tasks, where this
   sort of logging might be more useful, we have another log message with
   the same information: "Seeking partition[%s] to[%s]".
2022-11-20 23:53:17 -08:00
AmatyaAvadhanula 41e51b21c3
Make http options the default configurations (#13092)
Druid currently uses Zookeeper dependent options as the default.
This commit updates the following to use HTTP as the default instead.
- task runner. `druid.indexer.runner.type=remote -> httpRemote`
- load queue peon. `druid.coordinator.loadqueuepeon.type=curator -> http`
- server inventory view. `druid.serverview.type=curator -> http`
2022-10-05 05:35:17 +05:30
Frank Chen eff7c64228
export com.sun.management.internal (#13068) 2022-09-12 09:03:22 -07:00
Vadim Ogievetsky 2a039e7e6a
Add CTA and fix typo (#13009)
* Add CTA and fix typo

* resolve hostname better
2022-09-06 11:16:50 -07:00
zemin 6805a7f9c2
Ease of hidding sensitive properties from /status/proper… (#12950)
* apache#12063 Ease of hidding sensitive properties from /status/properties endpoint

* apache#12063 Ease of hidding sensitive properties from /status/properties endpoint

* apache#12063 Ease of hidding sensitive properties from /status/properties endpoint

using one property for hiding properties, updated the index.md to document hiddenProperties

* apache#12063 Ease of hidding sensitive properties from /status/properties endpoint

Added java docs

* apache#12063 Ease of hidding sensitive properties from /status/properties endpoint

Add "password", "key", "token", "pwd" as default druid.server.hiddenProperties

fixed typo and removed redundant space

Co-authored-by: zemin <zemin.piao@adyen.com>
2022-09-02 08:51:25 -05:00
Gian Merlino 48ceab2153
Add Java 17 information to documentation. (#12990)
The docs say Java 17 support is experimental, and give tips on running
successfully with Java 17.

This patch also removes java.base/jdk.internal.perf and
jdk.management/com.sun.management.internal from the list of required
exports and opens, because they were formerly needed for JvmMonitor,
which was rewritten in #12481 to use MXBeans instead.
2022-08-30 12:32:49 -07:00
Gian Merlino d7d15ba51f
Add druid-multi-stage-query extension. (#12918)
* Add druid-multi-stage-query extension.

* Adjustments from CI.

* Task ID validation.

* Various changes from code review.

* Remove unnecessary code.

* LGTM-related.
2022-08-23 18:44:01 -07:00
Adarsh Sanjeev 3755f30bc4
Add export parameters for Java 11 (#12859)
* Add exports for Java 11 parameters

* Add parameters for data sketches
2022-08-16 13:05:45 +05:30
vimil-saju 4d65c08576
changes to run examples when CDPATH environment variable is set where cd command returns current dir… (#12877)
* changes to run examples on macos where cd command returns current directory

* Update examples/bin/run-druid

Co-authored-by: Frank Chen <frankchen@apache.org>

* merging

* sending output of cd command to /dev/null

Co-authored-by: Frank Chen <frankchen@apache.org>
2022-08-14 13:15:24 +08:00
Gian Merlino ef6811ef88
Improved Java 17 support and Java runtime docs. (#12839)
* Improved Java 17 support and Java runtime docs.

1) Add a "Java runtime" doc page with information about supported
   Java versions, garbage collection, and strong encapsulation..

2) Update asm and equalsverifier to versions that support Java 17.

3) Add additional "--add-opens" lines to surefire configuration, so
   tests can pass successfully under Java 17.

4) Switch openjdk15 tests to openjdk17.

5) Update FrameFile to specifically mention Java runtime incompatibility
   as the cause of not being able to use Memory.map.

6) Update SegmentLoadDropHandler to log an error for Errors too, not
   just Exceptions. This is important because an IllegalAccessError is
   encountered when the correct "--add-opens" line is not provided,
   which would otherwise be silently ignored.

7) Update example configs to use druid.indexer.runner.javaOptsArray
   instead of druid.indexer.runner.javaOpts. (The latter is deprecated.)

* Adjustments.

* Use run-java in more places.

* Add run-java.

* Update .gitignore.

* Exclude hadoop-client-api.

Brought in when building on Java 17.

* Swap one more usage of java.

* Fix the run-java script.

* Fix flag.

* Include link to Temurin.

* Spelling.

* Update examples/bin/run-java

Co-authored-by: Xavier Léauté <xl+github@xvrl.net>

Co-authored-by: Xavier Léauté <xl+github@xvrl.net>
2022-08-03 23:16:05 -07:00
Gian Merlino 0ca37c20a6
Python 3 support for post-index-task. (#12841)
* Python 3 support for post-index-task.

Useful when running on macOS or any other system that
doesn't have Python 2.

* Encode JSON returned by read_task_file.

* Adjust.

* Skip needless loads.

* Add a decode.

* Additional decodes needed.
2022-08-02 17:53:34 -07:00
Charles Smith efbb58e90e
docs: remove maxRowsPerSegment where appropriate (#12071)
* remove maxRowsPerSegment where appropriate

* fix tutorial, accept suggestions

* Update docs/design/coordinator.md

* additional tutorial file

* fix initial index spec

* accept comments

* Update docs/tutorials/tutorial-compaction.md

Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>

* Update docs/tutorials/tutorial-compaction.md

Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>

* Update docs/tutorials/tutorial-compaction.md

Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>

* Update docs/tutorials/tutorial-compaction.md

Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>

* Update docs/tutorials/tutorial-compaction.md

Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>

* Update docs/tutorials/tutorial-compaction.md

Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>

* Update docs/tutorials/tutorial-compaction.md

Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>

* Update docs/tutorials/tutorial-compaction.md

Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>

* Update docs/tutorials/tutorial-compaction.md

Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>

* Update docs/tutorials/tutorial-compaction.md

Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>

* Update docs/tutorials/tutorial-compaction.md

Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>

* Update docs/tutorials/tutorial-compaction.md

Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>

* Update docs/tutorials/tutorial-compaction.md

Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>

* add back comment on maxrows per segment

* Update docs/tutorials/tutorial-compaction.md

Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>

* Update docs/tutorials/tutorial-compaction.md

Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>

* Update docs/tutorials/tutorial-compaction.md

Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>

* rm duplicate entry

* Update native-batch-simple-task.md

remove ref to `maxrowspersegment`

* Update native-batch.md

remove ref to `maxrowspersegment`

* final tenticles

* Apply suggestions from code review

Co-authored-by: Victoria Lim <vtlim@users.noreply.github.com>
2022-07-28 16:52:13 +05:30
Gian Merlino 0099940808
Add TIME_IN_INTERVAL SQL operator. (#12662)
* Add TIME_IN_INTERVAL SQL operator.

The operator is implemented as a convertlet rather than an
OperatorConversion, because this allows it to be equivalent to using
the >= and < operators directly.

* SqlParserPos cannot be null here.

* Remove unused import.

* Doc updates.

* Add words to dictionary.
2022-06-21 13:05:37 -07:00
Gian Merlino a27f4f5740
Service stdout log files, move logs to log/. (#12570)
* Service stdout log files, move logs to log/.

Two changes that make log behavior cleaner:

1) Redirect messages from the Java runtime to their own log files.
   Otherwise, they would get jumbled up in the output of the all-in-one
   start command.

2) Use log/ instead of bin/log/ for the default log directory. Makes them
   easier to find.

Additionally, add documentation about how to avoid the reflective
access warnings in Java 11.

* Spelling.

* See if code formatting affects spelling.
2022-06-03 10:44:29 +05:30
Tiffany Yeh 665c926824
Fix zulu8 set-up Dockerfile for hadoop and hadoop3 in hadoop ingestion tutorial (#12248)
Fix errors related to zulu8 installation for building the Hadoop Docker image in the Load From Apache Hadoop tutorial.

The steps to download zulu8 in the Dockerfile and setup-zulu-repo.sh were replaced with the steps in the Dockerfile released by zulu-openjdk: be45d20302/centos/8u282-8.52.0.23/Dockerfile.
2022-04-11 20:28:09 +05:30
AmatyaAvadhanula 7bf1d8c5c0
Facilitate lazy initialization of connections to mitigate overwhelming of Coordinator (#12298)
Add config for eager / lazy connection initialization in ResourcePool

Description
Currently, when multiple tasks are launched, each of them eagerly initializes a full pool's worth of connections to the coordinator.

While this is acceptable when the parameter for number of eagerConnections (== maxSize) is small, this can be problematic in environments where it's a large value (say 1000) and multiple tasks are launched simultaneously, which can cause a large number of connections to be created to the coordinator, thereby overwhelming it.

Patch
Nodes like the broker may require eager initialization of resources and do not create connections with the Coordinator.
It is unnecessary to do this with other types of nodes.

A config parameter eagerInitialization is added, which when set to true, initializes the max permissible connections when ResourcePool is initialized.

If set to false, lazy initialization of connection resources takes place.

NOTE: All nodes except the broker have this new parameter set to false in the quickstart as part of this PR

Algorithm
The current implementation relies on the creation of maxSize resources eagerly.

The new implementation's behaviour is as follows:

If a resource has been previously created and is available, lend it.
Else if the number of created resources is less than the allowed parameter, create and lend it.
Else, wait for one of the lent resources to be returned.
2022-03-09 23:17:43 +05:30
Gian Merlino 3b373114dc
Officially support Java 11. (#12232)
There aren't any changes in this patch that improve Java 11
compatibility; these changes have already been done separately. This
patch merely updates documentation and explicit Java version checks.

The log message adjustments in DruidProcessingConfig are there to make
things a little nicer when running in Java 11, where we can't measure
direct memory _directly_, and so we may auto-size processing buffers
incorrectly.
2022-03-04 14:15:45 -08:00
Karan Kumar a080fcdd7b
Fixing hadoop 3 Dockerfile (#12284) 2022-02-26 19:18:29 +05:30
Suneet Saldanha 159f97dcb0
Update docs for druid.processing.numThreads in brokers (#12231)
* Update docs for druid.processing.numThreads

* error msg

* one more reference
2022-02-04 17:34:21 -08:00
Laksh Singla dc1703d5f9
Change value of `druid.sql.planner.useGroupingSetForExactDistinct` in common.runtime.properties (#12182)
This PR changes the value of the property `druid.sql.planner.useGroupingSetForExactDistinct` from `false` to `true` in the runtime.properties files, so that newer installations have this property as `true`, while the default still remains as `false`.

The flag determines how queries which contain an aggregation over `DISTINCT` like `SELECT COUNT(DISTINCT foo.dim1) FILTER(WHERE foo.cnt = 1), SUM(foo.cnt) FROM druid.foo` get planned by Calcite. With the flag being set to false, it plans it via joins, whereas with it being set to true, the query is set using grouping sets.

There is a known issue with Calcite (https://github.com/apache/druid/issues/7953), where an NPE is thrown while planning the above query with joins. There is no such issue while planning the query using grouping sets.
2022-01-24 14:00:03 +05:30