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Java 11 support #10279

Merged
merged 23 commits into from
Feb 5, 2019
Merged

Java 11 support #10279

merged 23 commits into from
Feb 5, 2019

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yaauie
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@yaauie yaauie commented Jan 10, 2019

I'm attempting to chase down all of the loose ends with allowing Logstash to run on (and be developed against) Java 11.

  • support for jruby 9.2 (JRuby 9.2 bundler shenanigans #10266)
  • resolve conflicts of logstash plugin manager vs modern bundler's API changes
  • gradle update to 4.10.x; prior versions reject JDK 11
  • java API deprecations
  • java GC removal of XX:+UseParNewGC
  • java API changes
    • concurrent access enforcement in HashMap#computeIfAbsent
    • reflection into now-removed package-private classes in ChildProcess dev dependency
  • CI configuration

@yaauie yaauie force-pushed the java-11-support branch 3 times, most recently from 9950cc2 to 99b26e1 Compare January 22, 2019 05:19
@jsvd jsvd mentioned this pull request Jan 22, 2019
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Overall the change LGTM but I'd like someone's input in the Java changes before we merged this.
I have built the tar.gz with java 11.0.1 and it worked correctly in basic smoke tests in both java 11 and java 8.

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@danhermann danhermann left a comment

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All the Java changes look good to me.

jsvd and others added 22 commits February 4, 2019 22:02
update to 9.2.1.0

bump jruby to 9.2.3.0

bump jruby to 9.2.4.0

bump jruby to 9.2.4.1
this is because from 2.3 to 2.5 FileUtils.rmdir will throw an exception
if the directory isn't empty. On 2.3 the operation will just not delete
the directory silently.
There are 3 types of compiler warnings that are either resolved or suppressed:

1. Rawtypes: In JRuby 9.2, `RubyArray` is a generic, so references throughout
   our codebase to the now "raw" type trigger warnings. In most cases we cannot
   actually resolve the issue, since the JRuby-provided methods for creating
   `RubyArray`s still return the raw type, so these have been suppressed.

2. Deprecations:
   - `RubyString#intern19()` -> `RubyString#intern()`
   - `RubyString#downcase19(ThreadContext)` -> `RubyString#downcase(ThreadContext)`
   - `NativeException`: remove import & reference directly; suppress usage
     warnings
   - `RaiseException()`: migrate to equivalent non-deprecated methods wherever
     possible; in some cases where we are using this in conjunction with the
     also-deprecated `NativeException` to preserve java stacktraces, there
     seems to be no non-deprecated path forward, so these cases have been
     suppressed.

3. Redundant Casts
   - Resolved
* Revert "Revert "remove forced dependency on old bundler (elastic#9395)""

This reverts commit bef9841.

* plugin management: update internal bundler to 1.17.x APIs

* deps: update dev dependency webmock to version compatible with JRuby 9.2

* spec: update Pack fixture to include manticore version that doesn't conflict
When opting into CMS garbage collector with `XX:+UseConcMarkSweepGC`, the
young generation collector ParNew has been the default since Java 8, making
the `XX:+UseParNew` flag redundant; the flag was removed in Java 9, and
should no longer be specified to work with modern Javas.

https://bugs.openjdk.java.net/browse/JDK-8006478
https://openjdk.java.net/jeps/214
> This method will, on a best-effort basis, throw a `ConcurrentModificationException`
> if it is detected that the mapping function modifies this map during computation.
>
> -- https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/HashMap.html#computeIfAbsent(K,java.util.function.Function)
To support development on Logstash on top of Java 11, default to testing
against an Elastic Stack that is capable of running on Java 11.
this can safely be removed when the childprocess gem supports Java9+
enkessler/childprocess#141
The license compliance spec that validates the licenses of bundled
plugins appears to not be compatible with the hooks that we inject
into bundler for plugin management, and will fail in obscure ways
when run after those hooks have been added. Since those hooks are
not necessary for validating licenses, the easiest solution was to
ensure that those specs run first, before the VM has been poluted.

Since the gradle/junit/rspec bridge that is currently in place
runs all specs in the same JVM, we also need to make sure that the
rspec "world" is reset before a run, to ensure that it doesn't
retain spec definitions from previous runs.

Also updates the rake invocation, although I'm not sure it is used
any more.
@yaauie
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yaauie commented Feb 4, 2019

I've added one more commit to ensure that the license spec runs before the VM is poluted with our bundler patches, rebased, squashed a few more compiler warnings that master created in the presence of JRuby 9.2, and I think we are good to go.

@yaauie yaauie changed the title WIP: Java 11 support Java 11 support Feb 5, 2019
@yaauie yaauie merged commit 583ec6b into elastic:master Feb 5, 2019
@yaauie yaauie deleted the java-11-support branch February 5, 2019 00:36
@yaauie yaauie restored the java-11-support branch February 5, 2019 02:20
yaauie added a commit to yaauie/logstash that referenced this pull request Feb 5, 2019
* bump jruby to 9.2

* don't rely on logstash-base docker image

* work around webmock ruby 2.5 support

* ensure data folder exists in docker

* change fixnum and bignum to integer

* FileUtils.rmdir to rm_rf

this is because from 2.3 to 2.5 FileUtils.rmdir will throw an exception
if the directory isn't empty. On 2.3 the operation will just not delete
the directory silently.

* bump jruby to 9.2.5.0 and fix test

* make rake default task since prepare pack needs it

* Resolve compiler warnings (elastic#10247)

There are 3 types of compiler warnings that are either resolved or suppressed:

1. Rawtypes: In JRuby 9.2, `RubyArray` is a generic, so references throughout
   our codebase to the now "raw" type trigger warnings. In most cases we cannot
   actually resolve the issue, since the JRuby-provided methods for creating
   `RubyArray`s still return the raw type, so these have been suppressed.

2. Deprecations:
   - `RubyString#intern19()` -> `RubyString#intern()`
   - `RubyString#downcase19(ThreadContext)` -> `RubyString#downcase(ThreadContext)`
   - `NativeException`: remove import & reference directly; suppress usage
     warnings
   - `RaiseException()`: migrate to equivalent non-deprecated methods wherever
     possible; in some cases where we are using this in conjunction with the
     also-deprecated `NativeException` to preserve java stacktraces, there
     seems to be no non-deprecated path forward, so these cases have been
     suppressed.

3. Redundant Casts
   - Resolved

* JRuby 9.2 bundler shenanigans (elastic#10266)

* Revert "Revert "remove forced dependency on old bundler (elastic#9395)""

This reverts commit bef9841.

* plugin management: update internal bundler to 1.17.x APIs

* deps: update dev dependency webmock to version compatible with JRuby 9.2

* spec: update Pack fixture to include manticore version that doesn't conflict

* build: update gradle to version that has Java 11 support

* java11: resolve or suppress deprecation warnings

* Remove superfluous flag opting into ParNew GC implementation

When opting into CMS garbage collector with `XX:+UseConcMarkSweepGC`, the
young generation collector ParNew has been the default since Java 8, making
the `XX:+UseParNew` flag redundant; the flag was removed in Java 9, and
should no longer be specified to work with modern Javas.

https://bugs.openjdk.java.net/browse/JDK-8006478
https://openjdk.java.net/jeps/214

* spec: set thread name to example description for easier debugging

* spec: prevent errors in testing specs by checking against skip list before using

* no-op: remove use of `HashMap#computeIfAbsent` on single-threaded code

> This method will, on a best-effort basis, throw a `ConcurrentModificationException`
> if it is detected that the mapping function modifies this map during computation.
>
> -- https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/HashMap.html#computeIfAbsent(K,java.util.function.Function)

* qa: by default, run integration against Elastic Stack 6.5.x

To support development on Logstash on top of Java 11, default to testing
against an Elastic Stack that is capable of running on Java 11.

* qa: ignore deprecation warnings when comparing offline pack output

* qa: add Java 9+ support to ChildProcess dev dependency

this can safely be removed when the childprocess gem supports Java9+
enkessler/childprocess#141

* qa: allow connections to localhost in webmock

* bump jrjackson version

* fix filebeat integration tests

* spec: ensure license compliance spec runs first

The license compliance spec that validates the licenses of bundled
plugins appears to not be compatible with the hooks that we inject
into bundler for plugin management, and will fail in obscure ways
when run after those hooks have been added. Since those hooks are
not necessary for validating licenses, the easiest solution was to
ensure that those specs run first, before the VM has been poluted.

Since the gradle/junit/rspec bridge that is currently in place
runs all specs in the same JVM, we also need to make sure that the
rspec "world" is reset before a run, to ensure that it doesn't
retain spec definitions from previous runs.

Also updates the rake invocation, although I'm not sure it is used
any more.
jsvd pushed a commit that referenced this pull request Feb 5, 2019
backport of  #10279 to 6.x

* bump jruby to 9.2

* don't rely on logstash-base docker image

* work around webmock ruby 2.5 support

* ensure data folder exists in docker

* change fixnum and bignum to integer

* FileUtils.rmdir to rm_rf

this is because from 2.3 to 2.5 FileUtils.rmdir will throw an exception
if the directory isn't empty. On 2.3 the operation will just not delete
the directory silently.

* bump jruby to 9.2.5.0 and fix test

* make rake default task since prepare pack needs it

* Resolve compiler warnings (#10247)

There are 3 types of compiler warnings that are either resolved or suppressed:

1. Rawtypes: In JRuby 9.2, `RubyArray` is a generic, so references throughout
   our codebase to the now "raw" type trigger warnings. In most cases we cannot
   actually resolve the issue, since the JRuby-provided methods for creating
   `RubyArray`s still return the raw type, so these have been suppressed.

2. Deprecations:
   - `RubyString#intern19()` -> `RubyString#intern()`
   - `RubyString#downcase19(ThreadContext)` -> `RubyString#downcase(ThreadContext)`
   - `NativeException`: remove import & reference directly; suppress usage
     warnings
   - `RaiseException()`: migrate to equivalent non-deprecated methods wherever
     possible; in some cases where we are using this in conjunction with the
     also-deprecated `NativeException` to preserve java stacktraces, there
     seems to be no non-deprecated path forward, so these cases have been
     suppressed.

3. Redundant Casts
   - Resolved

* JRuby 9.2 bundler shenanigans (#10266)

* Revert "Revert "remove forced dependency on old bundler (#9395)""

This reverts commit bef9841.

* plugin management: update internal bundler to 1.17.x APIs

* deps: update dev dependency webmock to version compatible with JRuby 9.2

* spec: update Pack fixture to include manticore version that doesn't conflict

* build: update gradle to version that has Java 11 support

* java11: resolve or suppress deprecation warnings

* Remove superfluous flag opting into ParNew GC implementation

When opting into CMS garbage collector with `XX:+UseConcMarkSweepGC`, the
young generation collector ParNew has been the default since Java 8, making
the `XX:+UseParNew` flag redundant; the flag was removed in Java 9, and
should no longer be specified to work with modern Javas.

https://bugs.openjdk.java.net/browse/JDK-8006478
https://openjdk.java.net/jeps/214

* spec: set thread name to example description for easier debugging

* spec: prevent errors in testing specs by checking against skip list before using

* no-op: remove use of `HashMap#computeIfAbsent` on single-threaded code

> This method will, on a best-effort basis, throw a `ConcurrentModificationException`
> if it is detected that the mapping function modifies this map during computation.
>
> -- https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/HashMap.html#computeIfAbsent(K,java.util.function.Function)

* qa: by default, run integration against Elastic Stack 6.5.x

To support development on Logstash on top of Java 11, default to testing
against an Elastic Stack that is capable of running on Java 11.

* qa: ignore deprecation warnings when comparing offline pack output

* qa: add Java 9+ support to ChildProcess dev dependency

this can safely be removed when the childprocess gem supports Java9+
enkessler/childprocess#141

* qa: allow connections to localhost in webmock

* bump jrjackson version

* fix filebeat integration tests

* spec: ensure license compliance spec runs first

The license compliance spec that validates the licenses of bundled
plugins appears to not be compatible with the hooks that we inject
into bundler for plugin management, and will fail in obscure ways
when run after those hooks have been added. Since those hooks are
not necessary for validating licenses, the easiest solution was to
ensure that those specs run first, before the VM has been poluted.

Since the gradle/junit/rspec bridge that is currently in place
runs all specs in the same JVM, we also need to make sure that the
rspec "world" is reset before a run, to ensure that it doesn't
retain spec definitions from previous runs.

Also updates the rake invocation, although I'm not sure it is used
any more.
@rajachak
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rajachak commented Apr 3, 2019

Hello,

Apologies if I'm posting this in the wrong place...

It looks like the jdbc plugin is still not java 11 compatible,... I posted the error message here: logstash-plugins/logstash-input-jdbc#331

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4 participants