Elasticsearch 2.x and 5.x with IBM J9 VM

Elastic Stack Elasticsearch
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Is Elasticsearch 2.x and 5.x officially supported when run on IBM J9 VM (see below).
The support matrix (https://www.elastic.co/support/matrix#show_jvm) does not list J9 in any way. So IBM JVM 6 and 7 are excluded explicitly but no hint about IBM J9 VM.

$ java -version
java version "1.8.0"
Java(TM) SE Runtime Environment (build pxa6480sr3fp20-20161019_02(SR3 FP20))
IBM J9 VM (build 2.8, JRE 1.8.0 Linux amd64-64 Compressed References 20161013_322271 (JIT enabled, AOT enabled)
J9VM - R28_Java8_SR3_20161013_1635_B322271
JIT  - tr.r14.java.green_20161011_125790
GC   - R28_Java8_SR3_20161013_1635_B322271_CMPRSS
J9CL - 20161013_322271)
JCL - 20161018_01 based on Oracle jdk8u111-b14
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No, it is completely unsupported. In fact, there are known issues. You should use an OpenJDK-based JDK.

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