ExecutorSource
= ExecutorSource
ExecutorSource is a spark-metrics-Source.md[metrics source] of an executor:Executor.md[]. It uses an executor's executor:Executor.md#threadPool[threadPool] for calculating the gauges.
NOTE: Every executor has its own separate ExecutorSource that is registered when executor:CoarseGrainedExecutorBackend.md#RegisteredExecutor[CoarseGrainedExecutorBackend receives a RegisteredExecutor].
The name of a ExecutorSource is executor.
.ExecutorSource in JConsole (using Spark Standalone) image::spark-executorsource-jconsole.png[align="center"]
.ExecutorSource Gauges [cols="1,2",options="header",width="100%"] |=== | Gauge | Description | threadpool.activeTasks | Approximate number of threads that are actively executing tasks.
Uses http://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ThreadPoolExecutor.html[ThreadPoolExecutor.getActiveCount()]. | threadpool.completeTasks | Approximate total number of tasks that have completed execution.
Uses http://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ThreadPoolExecutor.html[ThreadPoolExecutor.getCompletedTaskCount()]. | threadpool.currentPool_size | Current number of threads in the pool.
Uses http://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ThreadPoolExecutor.html[ThreadPoolExecutor.getPoolSize()]. | threadpool.maxPool_size | Maximum allowed number of threads that have ever simultaneously been in the pool
Uses http://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ThreadPoolExecutor.html[ThreadPoolExecutor.getMaximumPoolSize()]. | filesystem.hdfs.read_bytes | Uses Hadoop's https://hadoop.apache.org/docs/current/api/org/apache/hadoop/fs/FileSystem.html[FileSystem.getAllStatistics()] and getBytesRead(). | filesystem.hdfs.write_bytes | Uses Hadoop's https://hadoop.apache.org/docs/current/api/org/apache/hadoop/fs/FileSystem.html[FileSystem.getAllStatistics()] and getBytesWritten(). | filesystem.hdfs.read_ops | Uses Hadoop's https://hadoop.apache.org/docs/current/api/org/apache/hadoop/fs/FileSystem.html[FileSystem.getAllStatistics()] and getReadOps() | filesystem.hdfs.largeRead_ops | Uses Hadoop's https://hadoop.apache.org/docs/current/api/org/apache/hadoop/fs/FileSystem.html[FileSystem.getAllStatistics()] and getLargeReadOps(). | filesystem.hdfs.write_ops | Uses Hadoop's https://hadoop.apache.org/docs/current/api/org/apache/hadoop/fs/FileSystem.html[FileSystem.getAllStatistics()] and getWriteOps(). | filesystem.file.read_bytes | The same as hdfs but for file scheme. | filesystem.file.write_bytes | The same as hdfs but for file scheme. | filesystem.file.read_ops | The same as hdfs but for file scheme. | filesystem.file.largeRead_ops | The same as hdfs but for file scheme. | filesystem.file.write_ops | The same as hdfs but for file scheme. |===