Contributing to Elastic Search on Github

[Vivek-Dh (Vivek Dehariya)]

Hello everyone,

I am trying to setup the ElasticSearch environment in my system to start contributing to the Github repo. I have been following the steps in Contributing.MD and I am facing an error when i ran "./gradlew check" with the latest code and no changes. It's as below

    org.elasticsearch.monitor.jvm.JvmInfoTests > testUseG1GC FAILED
    org.junit.ComparisonFailure: expected:<[tru]e> but was:<[fals]e>
        at __randomizedtesting.SeedInfo.seed([1B2A89A5E7DE1D4F:2E9BCB2C7AD32AC9]:0)
        at org.junit.Assert.assertEquals(Assert.java:115)
        at org.junit.Assert.assertEquals(Assert.java:144)
        at org.elasticsearch.monitor.jvm.JvmInfoTests.testUseG1GC(JvmInfoTests.java:33)
REPRODUCE WITH: ./gradlew :server:test --tests "org.elasticsearch.monitor.jvm.JvmInfoTests.testUseG1GC" -Dtests.seed=1B2A89A5E7DE1D4F -Dtests.security.manager=true -Dtests.locale=om-ET -Dtests.timezone=Africa/Algiers -Dcompiler.java=12 -Druntime.java=12

Suite: Test class org.elasticsearch.monitor.jvm.JvmInfoTests
  1> [2019-04-09T17:36:49,382][INFO ][o.e.m.j.JvmInfoTests     ] [testUseG1GC] before test
  1> [2019-04-09T17:36:49,402][INFO ][o.e.m.j.JvmInfoTests     ] [testUseG1GC] after test
  2> REPRODUCE WITH: ./gradlew :server:test --tests "org.elasticsearch.monitor.jvm.JvmInfoTests.testUseG1GC" -Dtests.seed=1B2A89A5E7DE1D4F -Dtests.security.manager=true -Dtests.locale=om-ET -Dtests.timezone=Africa/Algiers -Dcompiler.java=12 -Druntime.java=12
  2> org.junit.ComparisonFailure: expected:<[tru]e> but was:<[fals]e>
        at __randomizedtesting.SeedInfo.seed([1B2A89A5E7DE1D4F:2E9BCB2C7AD32AC9]:0)
        at org.junit.Assert.assertEquals(Assert.java:115)
        at org.junit.Assert.assertEquals(Assert.java:144)
        at org.elasticsearch.monitor.jvm.JvmInfoTests.testUseG1GC(JvmInfoTests.java:33)
  2> NOTE: leaving temporary files on disk at: /home/vivek/elastic/elasticsearch/server/build/testrun/test/temp/org.elasticsearch.monitor.jvm.JvmInfoTests_1B2A89A5E7DE1D4F-001
  2> NOTE: test params are: codec=Asserting(Lucene80): {}, docValues:{}, maxPointsInLeafNode=1504, maxMBSortInHeap=7.298212980353846, sim=Asserting(org.apache.lucene.search.similarities.AssertingSimilarity@12877fbf), locale=om-ET, timezone=Africa/Algiers
  2> NOTE: Linux 4.13.0-46-generic amd64/Oracle Corporation 12 (64-bit)/cpus=1,threads=1,free=375344968,total=518979584
  2> NOTE: All tests run in this JVM: [InetAddressRandomBinaryDocValuesRangeQueryTests, FloatRandomBinaryDocValuesRangeQueryTests, DoubleRandomBinaryDocValuesRangeQueryTests, LongRandomBinaryDocValuesRangeQueryTests, BlendedTermQueryTests, IntegerRandomBinaryDocValuesRangeQueryTests, SpanMatchNoDocsQueryTests, BinaryDocValuesRangeQueryTests, MinDocQueryTests, SearchAfterSortedDocQueryTests, CustomUnifiedHighlighterTests, BoundedBreakIteratorScannerTests, CustomPassageFormatterTests, CollapsingTopDocsCollectorTests, TruncateTokenFilterTests, DeDuplicatingTokenFilterTests, JvmGcMonitorServiceSettingsTests, JvmStatsTests, JvmGcMonitorServiceTests, JvmInfoTests]
WARNING: Illegal reflective access by org.mockito.internal.creation.jmock.ClassImposterizer$3 (file:/home/vivek/.gradle/caches/modules-2/files-2.1/org.elasticsearch/securemock/1.2/98201d4ad5ac93f6b415ae9172d52b5e7cda490e/securemock-1.2.jar) to constructor java.nio.file.FileStore()

8641 tests completed, 1 failed, 15 skipped

Tests with failures:
 - org.elasticsearch.monitor.jvm.JvmInfoTests.testUseG1GC

Can anyone tell me what is the issue here and how to resolve it?