Aniket Bhatnagar created SPARK-8896:
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Summary: StreamingSource should choose a unique name
Key: SPARK-8896
URL: https://issues.apache.org/jira/browse/SPARK-8896
Project: Spark
Issue Type: Bug
Components: Streaming
Affects Versions: 1.4.0
Reporter: Aniket Bhatnagar
If 2 instances of StreamingContext are created and run using the same
SparkContext, it results the following exception in the logs and causes the
latter StreamingContext's metrics to go unreported.
[ForkJoinPool-2-worker-7] [info] o.a.s.m.MetricsSystem -Metrics already
registered
java.lang.IllegalArgumentException: A metric named
<AppName>.StreamingMetrics.streaming.lastReceivedBatch_processingEndTime
already exists
at
com.codahale.metrics.MetricRegistry.register(MetricRegistry.java:91)~[metrics-core-3.1.0.jar:3.1.0]
at
com.codahale.metrics.MetricRegistry.registerAll(MetricRegistry.java:385)~[metrics-core-3.1.0.jar:3.1.0]
at
com.codahale.metrics.MetricRegistry.register(MetricRegistry.java:85)~[metrics-core-3.1.0.jar:3.1.0]
at
org.apache.spark.metrics.MetricsSystem.registerSource(MetricsSystem.scala:148)
~[spark-core_2.11-1.4.0.jar:1.4.0]
at
org.apache.spark.streaming.StreamingContext.<init>(StreamingContext.scala:199)
[spark-streaming_2.11-1.4.0.jar:1.4.0]
at
org.apache.spark.streaming.StreamingContext.<init>(StreamingContext.scala:71)
[spark-streaming_2.11-1.4.0.jar:1.4.0]
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