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https://issues.apache.org/jira/browse/SPARK-52564?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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sohurdc updated SPARK-52564:
----------------------------
Description:
Once checkpointing is enabled in Spark Streaming, configuration changes require
deleting the checkpoint, which results in loss of state.
code like this:
{{// Get StreamingContext from checkpoint data or create a new one
val val context = StreamingContext.getOrCreate(checkpointDirectory,
functionToCreateContext _)}}
{{...}}
{{context.start()}}
{{{}context.awaitTermination(){}}}{{{}{}}}
was:
Once checkpointing is enabled in Spark Streaming, configuration changes require
deleting the checkpoint, which results in loss of state.
{{// Function to create and setup a new StreamingContext
def functionToCreateContext(): StreamingContext = \{
val ssc = new StreamingContext(...) // new context
val lines = ssc.socketTextStream(...) // create DStreams
...
ssc.checkpoint(checkpointDirectory) // set checkpoint directory
ssc
}
// Get StreamingContext from checkpoint data or create a new one
val context = StreamingContext.getOrCreate(checkpointDirectory,
functionToCreateContext _)
// Do additional setup on context that needs to be done,
// irrespective of whether it is being started or restarted
context. ...
// Start the context
context.start()
context.awaitTermination()}}
> configuration changes require deleting the checkpoint
> -----------------------------------------------------
>
> Key: SPARK-52564
> URL: https://issues.apache.org/jira/browse/SPARK-52564
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 3.2.4, 3.3.4, 3.4.4, 3.5.6, 4.0.0
> Reporter: sohurdc
> Priority: Major
>
> Once checkpointing is enabled in Spark Streaming, configuration changes
> require deleting the checkpoint, which results in loss of state.
> code like this:
> {{// Get StreamingContext from checkpoint data or create a new one
> val val context = StreamingContext.getOrCreate(checkpointDirectory,
> functionToCreateContext _)}}
> {{...}}
> {{context.start()}}
> {{{}context.awaitTermination(){}}}{{{}{}}}
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