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From "ASF GitHub Bot (JIRA)" <>
Subject [jira] [Commented] (CAMEL-12108) StreamCache file is removed before wireTap ends in a splitter wireTap combination route
Date Wed, 03 Jan 2018 10:10:00 GMT


ASF GitHub Bot commented on CAMEL-12108:

davsclaus closed pull request #2159: CAMEL-12108 - PR on behalf of Bas Claessen

This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:

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diff --git a/camel-core/src/main/java/org/apache/camel/processor/ b/camel-core/src/main/java/org/apache/camel/processor/
index b95800a4191..5015d187223 100644
--- a/camel-core/src/main/java/org/apache/camel/processor/
+++ b/camel-core/src/main/java/org/apache/camel/processor/
@@ -227,6 +227,9 @@ private Exchange configureCopyExchange(Exchange exchange) {
         Exchange copy = ExchangeHelper.createCorrelatedCopy(exchange, false);
         // set MEP to InOnly as this wire tap is a fire and forget
+        // remove STREAM_CACHE_UNIT_OF_WORK property because this wire tap will
+        // close its own created stream cache(s)
+        copy.removeProperty(Exchange.STREAM_CACHE_UNIT_OF_WORK);
         return copy;


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> StreamCache file is removed before wireTap ends in a splitter wireTap combination route
> ---------------------------------------------------------------------------------------
>                 Key: CAMEL-12108
>                 URL:
>             Project: Camel
>          Issue Type: Bug
>          Components: camel-core
>    Affects Versions: 2.20.1
>            Reporter: Bas Claessen
>            Priority: Minor
>         Attachments: CAMEL-12108-WireTapProcessor.patch,
> When combining the splitter and wireTap functionality an org.apache.camel.RuntimeCamelException
(Cannot reset stream from file) will be thrown when:
> 1. a spooled StreamCache body is created in the wireTap route
> 2. the splitter route ends before the wireTap route
> The splitter will create an Exchange.STREAM_CACHE_UNIT_OF_WORK property to hold the StreamCaches
that will be created by the children of the splitter.
> When doing a wireTap in the splitter route, the property will be copied to the wireTap
route (when using the wireTap defaults).
> StreamCaches created in the wireTap route will now be added to the property as well and
will be closed when the splitter route ends.
> A possible workaround can be to create the wireTap route without copying the original
> However I think it is better to remove the Exchange.STREAM_CACHE_UNIT_OF_WORK property
in the org.apache.camel.processor.WireTapProcessor configureExchange method.
> I attached a maven project with a test to demonstrate the issue.

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