709 lines
29 KiB
Plaintext
709 lines
29 KiB
Plaintext
[[TestingFrameworkCheatsheet]]
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= Testing
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[partintro]
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Elasticsearch uses jUnit for testing, it also uses randomness in the
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tests, that can be set using a seed, the following is a cheatsheet of
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options for running the tests for ES.
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== Creating packages
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To create a distribution without running the tests, simply run the
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following:
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-----------------------------
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./gradlew assemble
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-----------------------------
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To create a platform-specific build including the x-pack modules, use the
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following depending on your operating system:
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-----------------------------
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./gradlew :distribution:archives:linux-tar:assemble
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./gradlew :distribution:archives:darwin-tar:assemble
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./gradlew :distribution:archives:windows-zip:assemble
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-----------------------------
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=== Running Elasticsearch from a checkout
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In order to run Elasticsearch from source without building a package, you can
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run it using Gradle:
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-------------------------------------
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./gradlew run
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-------------------------------------
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==== Launching and debugging from an IDE
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If you want to run Elasticsearch from your IDE, the `./gradlew run` task
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supports a remote debugging option:
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---------------------------------------------------------------------------
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./gradlew run --debug-jvm
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---------------------------------------------------------------------------
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This will instruct all JVMs (including any that run cli tools such as creating the keyring or adding users)
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to suspend and initiate a debug connection on port incrementing from `5005`.
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As such the IDE needs to be instructed to listen for connections on this port.
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Since we might run multiple JVMs as part of configuring and starting the cluster it's
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recommended to configure the IDE to initiate multiple listening attempts. In case of IntelliJ, this option
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is called "Auto restart" and needs to be checked. In case of Eclipse, "Connection limit" setting
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needs to be configured with a greater value (ie 10 or more).
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NOTE: If you have imported the project into IntelliJ according to the instructions in
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link:/CONTRIBUTING.md#importing-the-project-into-intellij-idea[CONTRIBUTING.md] then a debug run configuration
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named "Debug Elasticsearch" will be created for you and configured appropriately.
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==== Distribution
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By default a node is started with the zip distribution.
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In order to start with a different distribution use the `-Drun.distribution` argument.
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To for example start the open source distribution:
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-------------------------------------
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./gradlew run -Drun.distribution=oss
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-------------------------------------
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==== Other useful arguments
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- In order to start a node with a different max heap space add: `-Dtests.heap.size=4G`
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- In order to disable assertions add: `-Dtests.asserts=false`
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- In order to use a custom data directory: `--data-dir=/tmp/foo`
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- In order to preserve data in between executions: `--preserve-data`
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- In order to remotely attach a debugger to the process: `--debug-jvm`
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- In order to set a different keystore password: `--keystore-password`
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- In order to set an Elasticsearch setting, provide a setting with the following prefix: `-Dtests.es.`
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=== Test case filtering.
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- `tests.class` is a class-filtering shell-like glob pattern,
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- `tests.method` is a method-filtering glob pattern.
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Run a single test case (variants)
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----------------------------------------------------------
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./gradlew test -Dtests.class=org.elasticsearch.package.ClassName
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./gradlew test "-Dtests.class=*.ClassName"
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----------------------------------------------------------
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Run all tests in a package and its sub-packages
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----------------------------------------------------
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./gradlew test "-Dtests.class=org.elasticsearch.package.*"
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----------------------------------------------------
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Run any test methods that contain 'esi' (like: ...r*esi*ze...)
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-------------------------------
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./gradlew test "-Dtests.method=*esi*"
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-------------------------------
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Run all tests that are waiting for a bugfix (disabled by default)
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------------------------------------------------
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./gradlew test -Dtests.filter=@awaitsfix
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------------------------------------------------
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=== Seed and repetitions.
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Run with a given seed (seed is a hex-encoded long).
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------------------------------
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./gradlew test -Dtests.seed=DEADBEEF
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------------------------------
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=== Repeats _all_ tests of ClassName N times.
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Every test repetition will have a different method seed
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(derived from a single random master seed).
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--------------------------------------------------
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./gradlew test -Dtests.iters=N -Dtests.class=*.ClassName
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--------------------------------------------------
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=== Repeats _all_ tests of ClassName N times.
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Every test repetition will have exactly the same master (0xdead) and
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method-level (0xbeef) seed.
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------------------------------------------------------------------------
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./gradlew test -Dtests.iters=N -Dtests.class=*.ClassName -Dtests.seed=DEAD:BEEF
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------------------------------------------------------------------------
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=== Repeats a given test N times
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(note the filters - individual test repetitions are given suffixes,
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ie: testFoo[0], testFoo[1], etc... so using testmethod or tests.method
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ending in a glob is necessary to ensure iterations are run).
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-------------------------------------------------------------------------
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./gradlew test -Dtests.iters=N -Dtests.class=*.ClassName -Dtests.method=mytest*
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-------------------------------------------------------------------------
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Repeats N times but skips any tests after the first failure or M initial failures.
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-------------------------------------------------------------
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./gradlew test -Dtests.iters=N -Dtests.failfast=true -Dtestcase=...
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./gradlew test -Dtests.iters=N -Dtests.maxfailures=M -Dtestcase=...
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-------------------------------------------------------------
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=== Test groups.
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Test groups can be enabled or disabled (true/false).
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Default value provided below in [brackets].
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------------------------------------------------------------------
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./gradlew test -Dtests.awaitsfix=[false] - known issue (@AwaitsFix)
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------------------------------------------------------------------
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=== Load balancing and caches.
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By default the tests run on multiple processes using all the available cores on all
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available CPUs. Not including hyper-threading.
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If you want to explicitly specify the number of JVMs you can do so on the command
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line:
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----------------------------
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./gradlew test -Dtests.jvms=8
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----------------------------
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Or in `~/.gradle/gradle.properties`:
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----------------------------
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systemProp.tests.jvms=8
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----------------------------
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Its difficult to pick the "right" number here. Hypercores don't count for CPU
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intensive tests and you should leave some slack for JVM-interal threads like
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the garbage collector. And you have to have enough RAM to handle each JVM.
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=== Test compatibility.
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It is possible to provide a version that allows to adapt the tests behaviour
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to older features or bugs that have been changed or fixed in the meantime.
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-----------------------------------------
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./gradlew test -Dtests.compatibility=1.0.0
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-----------------------------------------
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=== Miscellaneous.
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Run all tests without stopping on errors (inspect log files).
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-----------------------------------------
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./gradlew test -Dtests.haltonfailure=false
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-----------------------------------------
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Run more verbose output (slave JVM parameters, etc.).
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----------------------
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./gradlew test -verbose
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----------------------
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Change the default suite timeout to 5 seconds for all
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tests (note the exclamation mark).
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---------------------------------------
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./gradlew test -Dtests.timeoutSuite=5000! ...
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---------------------------------------
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Change the logging level of ES (not Gradle)
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--------------------------------
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./gradlew test -Dtests.es.logger.level=DEBUG
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--------------------------------
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Print all the logging output from the test runs to the commandline
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even if tests are passing.
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------------------------------
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./gradlew test -Dtests.output=always
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------------------------------
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Configure the heap size.
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------------------------------
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./gradlew test -Dtests.heap.size=512m
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------------------------------
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Pass arbitrary jvm arguments.
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------------------------------
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# specify heap dump path
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./gradlew test -Dtests.jvm.argline="-XX:HeapDumpPath=/path/to/heapdumps"
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# enable gc logging
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./gradlew test -Dtests.jvm.argline="-verbose:gc"
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# enable security debugging
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./gradlew test -Dtests.jvm.argline="-Djava.security.debug=access,failure"
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------------------------------
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== Running verification tasks
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To run all verification tasks, including static checks, unit tests, and integration tests:
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---------------------------------------------------------------------------
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./gradlew check
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---------------------------------------------------------------------------
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Note that this will also run the unit tests and precommit tasks first. If you want to just
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run the in memory cluster integration tests (because you are debugging them):
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---------------------------------------------------------------------------
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./gradlew internalClusterTest
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---------------------------------------------------------------------------
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If you want to just run the precommit checks:
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---------------------------------------------------------------------------
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./gradlew precommit
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---------------------------------------------------------------------------
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Some of these checks will require `docker-compose` installed for bringing up
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test fixtures. If it's not present those checks will be skipped automatically.
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== Testing the REST layer
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The REST layer is tested through specific tests that are executed against
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a cluster that is configured and initialized via Gradle. The tests
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themselves can be written in either Java or with a YAML based DSL.
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YAML based REST tests should be preferred since these are shared between all
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the elasticsearch official clients. The YAML based tests describe the
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operations to be executed and the obtained results that need to be tested.
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The YAML tests support various operators defined in the link:/rest-api-spec/src/main/resources/rest-api-spec/test/README.asciidoc[rest-api-spec] and adhere to the link:/rest-api-spec/README.markdown[Elasticsearch REST API JSON specification]
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In order to run the YAML tests, the relevant API specification needs
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to be on the test classpath. Any gradle project that has support for REST
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tests will get the primary API on it's class path. However, to better support
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Gradle incremental builds, it is recommended to explicitly declare which
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parts of the API the tests depend upon.
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For example:
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---------------------------------------------------------------------------
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restResources {
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restApi {
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includeCore '_common', 'indices', 'index', 'cluster', 'nodes', 'get', 'ingest'
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}
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}
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---------------------------------------------------------------------------
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The REST tests are run automatically when executing the "./gradlew check" command. To run only the
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YAML REST tests use the following command (modules and plugins may also include YAML REST tests):
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---------------------------------------------------------------------------
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./gradlew :rest-api-spec:yamlRestTest
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---------------------------------------------------------------------------
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A specific test case can be run with the following command:
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---------------------------------------------------------------------------
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./gradlew ':rest-api-spec:yamlRestTest' \
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--tests "org.elasticsearch.test.rest.ClientYamlTestSuiteIT" \
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-Dtests.method="test {p0=cat.segments/10_basic/Help}"
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---------------------------------------------------------------------------
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The YAML REST tests support all the options provided by the randomized runner, plus the following:
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* `tests.rest.suite`: comma separated paths of the test suites to be run
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(by default loaded from /rest-api-spec/test). It is possible to run only a subset
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of the tests providing a sub-folder or even a single yaml file (the default
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/rest-api-spec/test prefix is optional when files are loaded from classpath)
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e.g. -Dtests.rest.suite=index,get,create/10_with_id
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* `tests.rest.blacklist`: comma separated globs that identify tests that are
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blacklisted and need to be skipped
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e.g. -Dtests.rest.blacklist=index/*/Index document,get/10_basic/*
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Java REST tests can be run with the "javaRestTest" task.
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For example :
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---------------------------------------------------------------------------
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./gradlew :modules:mapper-extras:javaRestTest
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---------------------------------------------------------------------------
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A specific test case can be run with the following syntax (fqn.test {params}):
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---------------------------------------------------------------------------
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./gradlew ':modules:mapper-extras:javaRestTest' \
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--tests "org.elasticsearch.index.mapper.TokenCountFieldMapperIntegrationIT.testSearchByTokenCount {storeCountedFields=true loadCountedFields=false}"
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---------------------------------------------------------------------------
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yamlRestTest's and javaRestTest's are easy to identify, since they are found in a
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respective source directory. However, there are some more specialized REST tests
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that use custom task names. These are usually found in "qa" projects commonly
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use the "integTest" task.
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If in doubt about which command to use, simply run <gradle path>:check
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Note that the REST tests, like all the integration tests, can be run against an external
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cluster by specifying the `tests.cluster` property, which if present needs to contain a
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comma separated list of nodes to connect to (e.g. localhost:9300). A transport client will
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be created based on that and used for all the before|after test operations, and to extract
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the http addresses of the nodes so that REST requests can be sent to them.
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== Testing packaging
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The packaging tests use Vagrant virtual machines or cloud instances to verify
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that installing and running Elasticsearch distributions works correctly on
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supported operating systems. These tests should really only be run on ephemeral
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systems because they're destructive; that is, these tests install and remove
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packages and freely modify system settings, so you will probably regret it if
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you execute them on your development machine.
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When you run a packaging test, Gradle will set up the target VM and mount your
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repository directory in the VM. Once this is done, a Gradle task will issue a
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Vagrant command to run a *nested* Gradle task on the VM. This nested Gradle
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runs the actual "destructive" test classes.
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. Install Virtual Box and Vagrant.
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+
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. (Optional) Install https://github.com/fgrehm/vagrant-cachier[vagrant-cachier] to squeeze
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a bit more performance out of the process:
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+
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--------------------------------------
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vagrant plugin install vagrant-cachier
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--------------------------------------
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+
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. You can run all of the OS packaging tests with `./gradlew packagingTest`.
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This task includes our legacy `bats` tests. To run only the OS tests that are
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written in Java, run `.gradlew distroTest`, will cause Gradle to build the tar,
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zip, and deb packages and all the plugins. It will then run the tests on every
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available system. This will take a very long time.
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+
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Fortunately, the various systems under test have their own Gradle tasks under
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`qa/os`. To find out what packaging combinations can be tested on a system, run
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the `tasks` task. For example:
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+
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----------------------------------
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./gradlew :qa:os:ubuntu-1804:tasks
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----------------------------------
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+
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If you want a quick test of the tarball and RPM packagings for Centos 7, you
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would run:
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+
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-------------------------------------------------------------------------------------------------
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./gradlew :qa:os:centos-7:distroTest.default-rpm :qa:os:centos-7:distroTest.default-linux-archive
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-------------------------------------------------------------------------------------------------
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Note that if you interrupt Gradle in the middle of running these tasks, any boxes started
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will remain running and you'll have to stop them manually with `./gradlew --stop` or
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`vagrant halt`.
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All the regular vagrant commands should just work so you can get a shell in a
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VM running trusty by running
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`vagrant up ubuntu-1604 --provider virtualbox && vagrant ssh ubuntu-1604`.
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These are the linux flavors supported, all of which we provide images for
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* ubuntu-1604 aka xenial
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* ubuntu-1804 aka bionic beaver
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* debian-8 aka jessie
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* debian-9 aka stretch, the current debian stable distribution
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* centos-6
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* centos-7
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* rhel-8
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* fedora-28
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* fedora-29
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* oel-6 aka Oracle Enterprise Linux 6
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* oel-7 aka Oracle Enterprise Linux 7
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* sles-12
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* opensuse-42 aka Leap
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We're missing the following from the support matrix because there aren't high
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quality boxes available in vagrant atlas:
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* sles-11
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=== Testing packaging on Windows
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The packaging tests also support Windows Server 2012R2 and Windows Server 2016.
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Unfortunately we're not able to provide boxes for them in open source use
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because of licensing issues. Any Virtualbox image that has WinRM and Powershell
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enabled for remote users should work.
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Testing on Windows requires the https://github.com/criteo/vagrant-winrm[vagrant-winrm] plugin.
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------------------------------------
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vagrant plugin install vagrant-winrm
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------------------------------------
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Specify the image IDs of the Windows boxes to gradle with the following project
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properties. They can be set in `~/.gradle/gradle.properties` like
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------------------------------------
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vagrant.windows-2012r2.id=my-image-id
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vagrant.windows-2016.id=another-image-id
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------------------------------------
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or passed on the command line like `-Pvagrant.windows-2012r2.id=my-image-id`
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`-Pvagrant.windows-2016=another-image-id`
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These properties are required for Windows support in all gradle tasks that
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handle packaging tests. Either or both may be specified.
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If you're running vagrant commands outside of gradle, specify the Windows boxes
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with the environment variables
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* `VAGRANT_WINDOWS_2012R2_BOX`
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* `VAGRANT_WINDOWS_2016_BOX`
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=== Testing VMs are disposable
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It's important to think of VMs like cattle. If they become lame you just shoot
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them and let vagrant reprovision them. Say you've hosed your precise VM:
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----------------------------------------------------
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vagrant ssh ubuntu-1604 -c 'sudo rm -rf /bin'; echo oops
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----------------------------------------------------
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All you've got to do to get another one is
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----------------------------------------------
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vagrant destroy -f ubuntu-1604 && vagrant up ubuntu-1604 --provider virtualbox
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----------------------------------------------
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The whole process takes a minute and a half on a modern laptop, two and a half
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without vagrant-cachier.
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Its possible that some downloads will fail and it'll be impossible to restart
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them. This is a bug in vagrant. See the instructions here for how to work
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around it:
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https://github.com/mitchellh/vagrant/issues/4479
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Some vagrant commands will work on all VMs at once:
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------------------
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vagrant halt
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vagrant destroy -f
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------------------
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`vagrant up` would normally start all the VMs but we've prevented that because
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that'd consume a ton of ram.
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=== Iterating on packaging tests
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Because our packaging tests are capable of testing many combinations of OS
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(e.g., Windows, Linux, etc.), package type (e.g., zip file, RPM, etc.),
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Elasticsearch distribution type (e.g., default or OSS), and so forth, it's
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faster to develop against smaller subsets of the tests. For example, to run
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tests for the default archive distribution on Fedora 28:
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-----------------------------------------------------------
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./gradlew :qa:os:fedora-28:distroTest.default-linux-archive
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-----------------------------------------------------------
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These test tasks can use the `--tests`, `--info`, and `--debug` parameters just like
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non-OS tests can. For example:
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-----------------------------------------------------------
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./gradlew :qa:os:fedora-28:distroTest.default-linux-archive \
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--tests "com.elasticsearch.packaging.test.ArchiveTests"
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-----------------------------------------------------------
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== Testing backwards compatibility
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Backwards compatibility tests exist to test upgrading from each supported version
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to the current version. To run them all use:
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-------------------------------------------------
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./gradlew bwcTest
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-------------------------------------------------
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A specific version can be tested as well. For example, to test bwc with
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version 5.3.2 run:
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-------------------------------------------------
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./gradlew v5.3.2#bwcTest
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-------------------------------------------------
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Use -Dtest.class and -Dtests.method to run a specific bwcTest test.
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For example to run a specific tests from the x-pack rolling upgrade from 7.7.0:
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-------------------------------------------------
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./gradlew :x-pack:qa:rolling-upgrade:v7.7.0#bwcTest \
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-Dtests.class=org.elasticsearch.upgrades.UpgradeClusterClientYamlTestSuiteIT \
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-Dtests.method="test {p0=*/40_ml_datafeed_crud/*}"
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-------------------------------------------------
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Tests are ran for versions that are not yet released but with which the current version will be compatible with.
|
|
These are automatically checked out and built from source.
|
|
See link:./buildSrc/src/main/java/org/elasticsearch/gradle/VersionCollection.java[VersionCollection]
|
|
and link:./distribution/bwc/build.gradle[distribution/bwc/build.gradle]
|
|
for more information.
|
|
|
|
When running `./gradlew check`, minimal bwc checks are also run against compatible versions that are not yet released.
|
|
|
|
==== BWC Testing against a specific remote/branch
|
|
|
|
Sometimes a backward compatibility change spans two versions. A common case is a new functionality
|
|
that needs a BWC bridge in an unreleased versioned of a release branch (for example, 5.x).
|
|
To test the changes, you can instruct Gradle to build the BWC version from a another remote/branch combination instead of
|
|
pulling the release branch from GitHub. You do so using the `bwc.remote` and `bwc.refspec.BRANCH` system properties:
|
|
|
|
-------------------------------------------------
|
|
./gradlew check -Dbwc.remote=${remote} -Dbwc.refspec.5.x=index_req_bwc_5.x
|
|
-------------------------------------------------
|
|
|
|
The branch needs to be available on the remote that the BWC makes of the
|
|
repository you run the tests from. Using the remote is a handy trick to make
|
|
sure that a branch is available and is up to date in the case of multiple runs.
|
|
|
|
Example:
|
|
|
|
Say you need to make a change to `master` and have a BWC layer in `5.x`. You
|
|
will need to:
|
|
. Create a branch called `index_req_change` off your remote `${remote}`. This
|
|
will contain your change.
|
|
. Create a branch called `index_req_bwc_5.x` off `5.x`. This will contain your bwc layer.
|
|
. Push both branches to your remote repository.
|
|
. Run the tests with `./gradlew check -Dbwc.remote=${remote} -Dbwc.refspec.5.x=index_req_bwc_5.x`.
|
|
|
|
==== Skip fetching latest
|
|
|
|
For some BWC testing scenarios, you want to use the local clone of the
|
|
repository without fetching latest. For these use cases, you can set the system
|
|
property `tests.bwc.git_fetch_latest` to `false` and the BWC builds will skip
|
|
fetching the latest from the remote.
|
|
|
|
== How to write good tests?
|
|
|
|
=== Base classes for test cases
|
|
|
|
There are multiple base classes for tests:
|
|
|
|
* **`ESTestCase`**: The base class of all tests. It is typically extended
|
|
directly by unit tests.
|
|
* **`ESSingleNodeTestCase`**: This test case sets up a cluster that has a
|
|
single node.
|
|
* **`ESIntegTestCase`**: An integration test case that creates a cluster that
|
|
might have multiple nodes.
|
|
* **`ESRestTestCase`**: An integration tests that interacts with an external
|
|
cluster via the REST API. This is used for Java based REST tests.
|
|
* **`ESClientYamlSuiteTestCase` **: A subclass of `ESRestTestCase` used to run
|
|
YAML based REST tests.
|
|
|
|
=== Good practices
|
|
|
|
==== What kind of tests should I write?
|
|
|
|
Unit tests are the preferred way to test some functionality: most of the time
|
|
they are simpler to understand, more likely to reproduce, and unlikely to be
|
|
affected by changes that are unrelated to the piece of functionality that is
|
|
being tested.
|
|
|
|
The reason why `ESSingleNodeTestCase` exists is that all our components used to
|
|
be very hard to set up in isolation, which had led us to having a number of
|
|
integration tests but close to no unit tests. `ESSingleNodeTestCase` is a
|
|
workaround for this issue which provides an easy way to spin up a node and get
|
|
access to components that are hard to instantiate like `IndicesService`.
|
|
Whenever practical, you should prefer unit tests.
|
|
|
|
Many tests extend `ESIntegTestCase`, mostly because this is how most tests used
|
|
to work in the early days of Elasticsearch. However the complexity of these
|
|
tests tends to make them hard to debug. Whenever the functionality that is
|
|
being tested isn't intimately dependent on how Elasticsearch behaves as a
|
|
cluster, it is recommended to write unit tests or REST tests instead.
|
|
|
|
In short, most new functionality should come with unit tests, and optionally
|
|
REST tests to test integration.
|
|
|
|
==== Refactor code to make it easier to test
|
|
|
|
Unfortunately, a large part of our code base is still hard to unit test.
|
|
Sometimes because some classes have lots of dependencies that make them hard to
|
|
instantiate. Sometimes because API contracts make tests hard to write. Code
|
|
refactors that make functionality easier to unit test are encouraged. If this
|
|
sounds very abstract to you, you can have a look at
|
|
https://github.com/elastic/elasticsearch/pull/16610[this pull request] for
|
|
instance, which is a good example. It refactors `IndicesRequestCache` in such
|
|
a way that:
|
|
- it no longer depends on objects that are hard to instantiate such as
|
|
`IndexShard` or `SearchContext`,
|
|
- time-based eviction is applied on top of the cache rather than internally,
|
|
which makes it easier to assert on what the cache is expected to contain at
|
|
a given time.
|
|
|
|
=== Bad practices
|
|
|
|
==== Use randomized-testing for coverage
|
|
|
|
In general, randomization should be used for parameters that are not expected
|
|
to affect the behavior of the functionality that is being tested. For instance
|
|
the number of shards should not impact `date_histogram` aggregations, and the
|
|
choice of the `store` type (`niofs` vs `mmapfs`) does not affect the results of
|
|
a query. Such randomization helps improve confidence that we are not relying on
|
|
implementation details of one component or specifics of some setup.
|
|
|
|
However it should not be used for coverage. For instance if you are testing a
|
|
piece of functionality that enters different code paths depending on whether
|
|
the index has 1 shards or 2+ shards, then we shouldn't just test against an
|
|
index with a random number of shards: there should be one test for the 1-shard
|
|
case, and another test for the 2+ shards case.
|
|
|
|
==== Abuse randomization in multi-threaded tests
|
|
|
|
Multi-threaded tests are often not reproducible due to the fact that there is
|
|
no guarantee on the order in which operations occur across threads. Adding
|
|
randomization to the mix usually makes things worse and should be done with
|
|
care.
|
|
|
|
== Test coverage analysis
|
|
|
|
Generating test coverage reports for Elasticsearch is currently not possible through Gradle.
|
|
However, it _is_ possible to gain insight in code coverage using IntelliJ's built-in coverage
|
|
analysis tool that can measure coverage upon executing specific tests. Eclipse may also be able
|
|
to do the same using the EclEmma plugin.
|
|
|
|
Test coverage reporting used to be possible with JaCoCo when Elasticsearch was using Maven
|
|
as its build system. Since the switch to Gradle though, this is no longer possible, seeing as
|
|
the code currently used to build Elasticsearch does not allow JaCoCo to recognize its tests.
|
|
For more information on this, see the discussion in https://github.com/elastic/elasticsearch/issues/28867[issue #28867].
|
|
|
|
---------------------------------------------------------------------------
|
|
|
|
Read your IDE documentation for how to attach a debugger to a JVM process.
|
|
|
|
== Building with extra plugins
|
|
Additional plugins may be built alongside elasticsearch, where their
|
|
dependency on elasticsearch will be substituted with the local elasticsearch
|
|
build. To add your plugin, create a directory called elasticsearch-extra as
|
|
a sibling of elasticsearch. Checkout your plugin underneath elasticsearch-extra
|
|
and the build will automatically pick it up. You can verify the plugin is
|
|
included as part of the build by checking the projects of the build.
|
|
|
|
---------------------------------------------------------------------------
|
|
./gradlew projects
|
|
---------------------------------------------------------------------------
|
|
|
|
== Environment misc
|
|
|
|
There is a known issue with macOS localhost resolve strategy that can cause
|
|
some integration tests to fail. This is because integration tests have timings
|
|
for cluster formation, discovery, etc. that can be exceeded if name resolution
|
|
takes a long time.
|
|
To fix this, make sure you have your computer name (as returned by `hostname`)
|
|
inside `/etc/hosts`, e.g.:
|
|
....
|
|
127.0.0.1 localhost ElasticMBP.local
|
|
255.255.255.255 broadcasthost
|
|
::1 localhost ElasticMBP.local`
|
|
....
|
|
|
|
== Benchmarking
|
|
|
|
For changes that might affect the performance characteristics of Elasticsearch
|
|
you should also run macrobenchmarks. We maintain a macrobenchmarking tool
|
|
called https://github.com/elastic/rally[Rally]
|
|
which you can use to measure the performance impact. It comes with a set of
|
|
default benchmarks that we also
|
|
https://elasticsearch-benchmarks.elastic.co/[run every night]. To get started,
|
|
please see https://esrally.readthedocs.io/en/stable/[Rally's documentation].
|
|
|
|
== Test doc builds
|
|
|
|
The Elasticsearch docs are in AsciiDoc format. You can test and build the docs
|
|
locally using the Elasticsearch documentation build process. See
|
|
https://github.com/elastic/docs.
|