dongjoon-hyun commented on code in PR #41709:
URL: https://github.com/apache/spark/pull/41709#discussion_r1240040307
##########
core/src/main/scala/org/apache/spark/util/Utils.scala:
##########
@@ -2287,6 +2287,22 @@ private[spark] object Utils extends Logging with
SparkClassUtils {
}.map(threadInfoToThreadStackTrace)
}
+ /** Return a heap dump. Used to capture dumps for the web UI */
+ def getHeapHistogram(): Array[String] = {
+ val pid = String.valueOf(ProcessHandle.current().pid())
+ val builder = new ProcessBuilder("jmap", "-histo:live", pid)
Review Comment:
@pan3793 . Here, the contact on `jmap` is just one of available binary, not
the same JDK's `jmap`.
However, I'm interested in this case. Could you make a small reproducer with
Docker image?
> Spark executor proccess respect JAVA_HOME to find $JAVA_HOME/bin/java but
the subprocess can not find jmap even it knows where JAVA_HOME is.
##########
core/src/main/scala/org/apache/spark/util/Utils.scala:
##########
@@ -2287,6 +2287,22 @@ private[spark] object Utils extends Logging with
SparkClassUtils {
}.map(threadInfoToThreadStackTrace)
}
+ /** Return a heap dump. Used to capture dumps for the web UI */
+ def getHeapHistogram(): Array[String] = {
+ val pid = String.valueOf(ProcessHandle.current().pid())
+ val builder = new ProcessBuilder("jmap", "-histo:live", pid)
Review Comment:
@pan3793 . Here, the contract on `jmap` is just one of available binary, not
the same JDK's `jmap`.
However, I'm interested in this case. Could you make a small reproducer with
Docker image?
> Spark executor proccess respect JAVA_HOME to find $JAVA_HOME/bin/java but
the subprocess can not find jmap even it knows where JAVA_HOME is.
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