pan3793 commented on code in PR #7952:
URL: https://github.com/apache/hadoop/pull/7952#discussion_r2340730902
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hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/pipes/TestPipeApplication.java:
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@@ -614,7 +618,7 @@ private File getFileCommand(String clazz) throws Exception {
if (clazz == null) {
os.write(("ls ").getBytes());
} else {
- os.write(("java -cp " + classpath + " " + clazz).getBytes());
+ os.write((System.getProperty("java.home") + "/bin/java -cp " + classpath
+ " " + clazz).getBytes());
Review Comment:
This should work.
It might be worth documenting that in Java 8,
`System.getProperty("java.home")` actually returns `$JAVA_HOME/jre`, commands
under `$JAVA_HOME/jre/bin` are a subset of `$JAVA_HOME/bin`.
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