[jira] [Updated] (FLINK-7423) Always reuse an instance to get elements from the inputFormat

["Flink Jira Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-7423?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Flink Jira Bot updated FLINK-7423:
----------------------------------
    Labels: auto-unassigned stale-major  (was: auto-unassigned)

I am the [Flink Jira Bot|https://github.com/apache/flink-jira-bot/] and I help the community manage its development. I see this issues has been marked as Major but is unassigned and neither itself nor its Sub-Tasks have been updated for 30 days. I have gone ahead and added a "stale-major" to the issue". If this ticket is a Major, please either assign yourself or give an update. Afterwards, please remove the label or in 7 days the issue will be deprioritized.


> Always reuse an instance  to get elements from the inputFormat 
> ---------------------------------------------------------------
>
>                 Key: FLINK-7423
>                 URL: https://issues.apache.org/jira/browse/FLINK-7423
>             Project: Flink
>          Issue Type: Bug
>          Components: API / DataStream
>            Reporter: Xu Pingyong
>            Priority: Major
>              Labels: auto-unassigned, stale-major
>
> In InputFormatSourceFunction.java:
> {code:java}
> OUT nextElement = serializer.createInstance();
> 			while (isRunning) {
> 				format.open(splitIterator.next());
> 				// for each element we also check if cancel
> 				// was called by checking the isRunning flag
> 				while (isRunning && !format.reachedEnd()) {
> 					nextElement = format.nextRecord(nextElement);
> 					if (nextElement != null) {
> 						ctx.collect(nextElement);
> 					} else {
> 						break;
> 					}
> 				}
> 				format.close();
> 				completedSplitsCounter.inc();
> 				if (isRunning) {
> 					isRunning = splitIterator.hasNext();
> 				}
> 			}
> {code}
> the format may return other element or null when nextRecord, that will may cause exception.



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