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From "Tyson Condie (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SPARK-18790) Keep a general offset history of stream batches
Date Thu, 08 Dec 2016 20:47:58 GMT
Tyson Condie created SPARK-18790:
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             Summary: Keep a general offset history of stream batches
                 Key: SPARK-18790
                 URL: https://issues.apache.org/jira/browse/SPARK-18790
             Project: Spark
          Issue Type: Improvement
            Reporter: Tyson Condie


Instead of only keeping the minimum number of offsets around, we should keep enough information
to allow us to roll back n batches and reexecute the stream starting from a given point. In
particular, we should create a config in SQLConf, spark.sql.streaming.retainedBatches that
defaults to 100 and ensure that we keep enough log files in the following places to roll back
the specified number of batches:

the offsets that are present in each batch
versions of the state store
the files lists stored for the FileStreamSource
the metadata log stored by the FileStreamSink



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