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https://issues.apache.org/jira/browse/FLUME-2126?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14003746#comment-14003746
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Edward Sargisson commented on FLUME-2126:
-----------------------------------------
We need to be careful in testing in this section. The exception catches in this
section are designed to do much the same job.
There have been at least two previous work items where we've had to enhance
what is accepted.
> Problem in elasticsearch sink when the event body is a complex field
> --------------------------------------------------------------------
>
> Key: FLUME-2126
> URL: https://issues.apache.org/jira/browse/FLUME-2126
> Project: Flume
> Issue Type: Bug
> Components: Sinks+Sources
> Environment: 1.3.1 and 1.4
> Reporter: Massimo Paladin
> Assignee: Ashish Paliwal
>
> I have found a bug in the elasticsearch sink, the problem is in the
> {{ContentBuilderUtil.addComplexField}} method, when it does
> {{builder.field(fieldName, tmp);}} the {{tmp}} object is taken as {{Object}}
> with the result of being serialized with the {{toString}} method in the
> {{XContentBuilder}}. In the end you get the object reference as content.
> The following change workaround the problem for me, the bad point is that it
> has to parse the content twice, I guess there is a better way to solve the
> problem but I am not an elasticsearch api expert.
> {code}
> ---
> a/flume-ng-sinks/flume-ng-elasticsearch-sink/src/main/java/org/apache/flume/sink/elasticsearch/ContentBuilderUtil.java
> +++
> b/flume-ng-sinks/flume-ng-elasticsearch-sink/src/main/java/org/apache/flume/sink/elasticsearch/ContentBuilderUtil.java
> @@ -61,7 +61,12 @@ public class ContentBuilderUtil {
> parser = XContentFactory.xContent(contentType).createParser(data);
> parser.nextToken();
> tmp.copyCurrentStructure(parser);
> - builder.field(fieldName, tmp);
> +
> + // if it is a valid structure then we include it
> + parser = XContentFactory.xContent(contentType).createParser(data);
> + parser.nextToken();
> + builder.field(fieldName);
> + builder.copyCurrentStructure(parser);
> } catch (JsonParseException ex) {
> // If we get an exception here the most likely cause is nested JSON
> that
> // can't be figured out in the body. At this point just push it through
> {code}
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