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https://issues.apache.org/jira/browse/SPARK-10091?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stanislav Los updated SPARK-10091:
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Description:
Apparently, PySpark Streaming application can't recover from a checkpoint that
was stored in HDFS. Method StreamingContext.getOrCreate looks for an existing
checkpoint at local file system only.
{code:title=pyspark.streaming.StreamingContext.getOrCreate()}
if not os.path.exists(checkpointPath) or not os.listdir(checkpointPath):
ssc = setupFunc()
ssc.checkpoint(checkpointPath)
return ssc
{code}
was:
Apparently, PySpark Streaming application can't recover from a checkpoint that
was stored in HDFS. Method StreamingContext.getOrCreate looks for an existing
checkpoint at local file system only.
{code:title=pyspark.streaming.StreamingContext.getOrCreate()}
if not os.path.exists(checkpointPath) or not os.listdir(checkpointPath):
ssc = setupFunc()
ssc.checkpoint(checkpointPath)
return ssc
{code}
In case if this is taken care of, next piece of code fails anyway (data is
present in hdfs):
{code:title=pyspark.streaming.StreamingContext.getOrCreate()}
try:
jssc = gw.jvm.JavaStreamingContext(checkpointPath)
except Exception:
print >>sys.stderr, "failed to load StreamingContext from checkpoint"
{code}
raise
> PySpark Streaming doesn't support Context recovery from checkpoint in HDFS
> --------------------------------------------------------------------------
>
> Key: SPARK-10091
> URL: https://issues.apache.org/jira/browse/SPARK-10091
> Project: Spark
> Issue Type: Bug
> Components: PySpark, Streaming
> Affects Versions: 1.3.0, 1.3.1, 1.4.0, 1.4.1
> Reporter: Stanislav Los
>
> Apparently, PySpark Streaming application can't recover from a checkpoint
> that was stored in HDFS. Method StreamingContext.getOrCreate looks for an
> existing checkpoint at local file system only.
> {code:title=pyspark.streaming.StreamingContext.getOrCreate()}
> if not os.path.exists(checkpointPath) or not os.listdir(checkpointPath):
> ssc = setupFunc()
> ssc.checkpoint(checkpointPath)
> return ssc
> {code}
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