arvindshmicrosoft commented on a change in pull request #294: Fix Muchos to
work with Java 11
URL: https://github.com/apache/fluo-muchos/pull/294#discussion_r339850078
##########
File path: ansible/roles/hadoop/tasks/main.yml
##########
@@ -34,6 +34,12 @@
with_items:
- workers
when: hadoop_major_version == '3'
+
+# This is currently needed to run hadoop with Java 11 (see
https://github.com/apache/fluo-muchos/issues/266)
+- name: "Copy javax.activation-api (when Hadoop 3 and Java 11 are used)"
+ synchronize: src={{ user_home }}/mvn_dep/ dest={{ hadoop_home
}}/share/hadoop/common/lib/
+ when: hadoop_major_version == '3' and java_product_version == 11
Review comment:
hi @keith-turner I made a few updates to the overall logic of Java 11 and
1.9. Regarding the above condition in Ansible, I prefer to leave it as-is. It
looks like the [fix](https://issues.apache.org/jira/browse/HADOOP-15775) for
the java activation API issue is due to be released with Hadoop 3.3, so
hopefully this fix (of copying the javax dependency) will not be needed in the
longer term. And I'm also assuming that anyone using Java 12 or above will
probably need a higher version of Hadoop than 3.3 - I did not see any JIRAs
tracking this ask for Java 12.
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