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new ef636c4278f5 MAPREDUCE-7468: Change add-opens flag's default value
from true to false (#6436)
ef636c4278f5 is described below
commit ef636c4278f5d3e07155fbdb99aa9632c1676999
Author: Benjamin Teke <brumi1...@users.noreply.github.com>
AuthorDate: Thu Jan 11 14:51:59 2024 +0100
MAPREDUCE-7468: Change add-opens flag's default value from true to false
(#6436)
Co-authored-by: Benjamin Teke <bt...@cloudera.com>
---
.../hadoop/mapreduce/v2/app/job/impl/TestMapReduceChildJVM.java | 1 -
.../src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java | 2 +-
.../src/main/resources/mapred-default.xml | 4 ++--
3 files changed, 3 insertions(+), 4 deletions(-)
diff --git
a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/job/impl/TestMapReduceChildJVM.java
b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/job/impl/TestMapReduceChildJVM.java
index e22bd44ee905..d653186edd7a 100644
---
a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/job/impl/TestMapReduceChildJVM.java
+++
b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/job/impl/TestMapReduceChildJVM.java
@@ -52,7 +52,6 @@ public class TestMapReduceChildJVM {
MyMRApp app = new MyMRApp(1, 0, true, this.getClass().getName(), true);
Configuration conf = new Configuration();
conf.setBoolean(MRConfig.MAPREDUCE_APP_SUBMISSION_CROSS_PLATFORM, true);
- conf.setBoolean(MRJobConfig.MAPREDUCE_JVM_ADD_OPENS_JAVA_OPT, false);
Job job = app.submit(conf);
app.waitForState(job, JobState.SUCCEEDED);
app.verifyCompleted();
diff --git
a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java
b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java
index 289159ad922a..3e5bd671bc3b 100644
---
a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java
+++
b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java
@@ -312,7 +312,7 @@ public interface MRJobConfig {
public static final String MAPREDUCE_JVM_ADD_OPENS_JAVA_OPT =
"mapreduce.jvm.add-opens-as-default";
- public static final boolean MAPREDUCE_JVM_ADD_OPENS_JAVA_OPT_DEFAULT = true;
+ public static final boolean MAPREDUCE_JVM_ADD_OPENS_JAVA_OPT_DEFAULT = false;
public static final String IO_SORT_FACTOR = "mapreduce.task.io.sort.factor";
diff --git
a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml
b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml
index ca144a7b156c..066d80a89c4e 100644
---
a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml
+++
b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml
@@ -1822,12 +1822,12 @@
<property>
<name>mapreduce.jvm.add-opens-as-default</name>
- <value>true</value>
+ <value>false</value>
<description>Since on JDK17 it's no longer possible to use the reflection
API to
access non-public fields and methods add-opens flags should be added to MR
AM
and map/reduce containers regardless of the user specified java opts.
Setting
this to true will add the flags to the container launch commands on nodes
with
- JDK17 or higher. Defaults to true, but the setting has no effect on nodes
using
+ JDK17 or higher. Defaults to false, and the setting has no effect on nodes
using
JDK16 and before.
</description>
</property>
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