257d01a6b8
## What changes were proposed in this pull request?
This PR supports `OpenJ9` in addition to `IBM JDK` and `OpenJDK` in Spark by handling `System.getProperty("java.vendor") = "Eclipse OpenJ9"`.
In `inferDefaultMemory()` and `getKrb5LoginModuleName()`, this PR uses non `IBM` way.
```
$ ~/jdk-11.0.2+9_openj9-0.12.1/bin/jshell
| Welcome to JShell -- Version 11.0.2
| For an introduction type: /help intro
jshell> System.out.println(System.getProperty("java.vendor"))
Eclipse OpenJ9
jshell> System.out.println(System.getProperty("java.vm.info"))
JRE 11 Linux amd64-64-Bit Compressed References 20190204_127 (JIT enabled, AOT enabled)
OpenJ9 - 90dd8cb40
OMR - d2f4534b
JCL - 289c70b6844 based on jdk-11.0.2+9
jshell> System.out.println(Class.forName("com.ibm.lang.management.OperatingSystemMXBean").getDeclaredMethod("getTotalPhysicalMemory"))
public abstract long com.ibm.lang.management.OperatingSystemMXBean.getTotalPhysicalMemory()
jshell> System.out.println(Class.forName("com.sun.management.OperatingSystemMXBean").getDeclaredMethod("getTotalPhysicalMemorySize"))
public abstract long com.sun.management.OperatingSystemMXBean.getTotalPhysicalMemorySize()
jshell> System.out.println(Class.forName("com.ibm.security.auth.module.Krb5LoginModule"))
| Exception java.lang.ClassNotFoundException: com.ibm.security.auth.module.Krb5LoginModule
| at Class.forNameImpl (Native Method)
| at Class.forName (Class.java:339)
| at (#1:1)
jshell> System.out.println(Class.forName("com.sun.security.auth.module.Krb5LoginModule"))
class com.sun.security.auth.module.Krb5LoginModule
```
## How was this patch tested?
Existing test suites
Manual testing with OpenJ9.
Closes #24308 from kiszk/SPARK-27397.
Authored-by: Kazuaki Ishizaki <ishizaki@jp.ibm.com>
Signed-off-by: Sean Owen <sean.owen@databricks.com>
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| .. | ||
| benchmarks | ||
| src | ||
| pom.xml | ||