[GitHub] HeartSaVioR commented on a change in pull request #23840: [SPARK-24295][SS] Add option to retain only last batch in file stream sink metadata

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HeartSaVioR commented on a change in pull request #23840: [SPARK-24295][SS] Add option to retain only last batch in file stream sink metadata
URL: https://github.com/apache/spark/pull/23840#discussion_r258316521
 
 

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 File path: docs/structured-streaming-programming-guide.md
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 @@ -536,6 +536,11 @@ Here are the details of all the sources in Spark.
         href="api/R/read.stream.html">R</a>).
         E.g. for "parquet" format options see <code>DataStreamReader.parquet()</code>.
         <br/><br/>
+        <code>ignoreFileStreamSinkMetadata</code>: whether to ignore metadata information being left from file stream sink, which leads to always use in-memory file index. (default: false)
 
 Review comment:
   I couldn't find place to leave this for (batch) file source. Please let me know if we have proper place to put. At least we guide the needs of enable this option when "retainOnlyLastBatchInMetadata" option is enabled, so might be safe for batch case as well.

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