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[SPARK-47728][DOC] Document G1 Concurrent GC metrics #45874

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[SPARK-47728][DOC] Document G1 Concurrent GC metrics #45874

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10 changes: 10 additions & 0 deletions docs/monitoring.md
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Expand Up @@ -704,6 +704,16 @@ A list of the available metrics, with a short description:
<td>Elapsed time the JVM spent in garbage collection while executing this task.
The value is expressed in milliseconds.</td>
</tr>
<tr>
<td>ConcurrentGCCount</td>
<td>This metric returns the total number of collections that have occurred.
It only applies when the Java Garbage collector is G1 Concurrent GC.</td>
</tr>
<tr>
<td>ConcurrentGCTime</td>
<td>This metric returns the approximate accumulated collection elapsed time in milliseconds.
It only applies when the Java Garbage collector is G1 Concurrent GC.</td>
</tr>
<tr>
<td>resultSerializationTime</td>
<td>Elapsed time spent serializing the task result. The value is expressed in milliseconds.</td>
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