# Stackoverflow on Elasticsearch file indexation with ingest-attachment

**URL:** <https://discuss.elastic.co/t/stackoverflow-on-elasticsearch-file-indexation-with-ingest-attachment/253455>\
**Category:** Elasticsearch\
**Created:** [October 27, 2020, 3:16pm UTC](https://discuss.elastic.co/t/stackoverflow-on-elasticsearch-file-indexation-with-ingest-attachment/253455 "2020-10-27T15:16:24Z")\
**Posts on this page:** 1\
**Showing post:** 4

<div class="post-metadata">

**Author:** ![Mathulbrich](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mathulbrich/32/63127_2.png) [@Mathulbrich](https://discuss.elastic.co/u/Mathulbrich)\
**Post date:** [October 28, 2020, 6:29pm UTC](https://discuss.elastic.co/t/stackoverflow-on-elasticsearch-file-indexation-with-ingest-attachment/253455/4 "2020-10-28T18:29:52Z")

</div>

I have tested most recently version (7.9.3), but same problem occurs.

Seeing the log with more attention, the problem occurs on PDPageTree wich comes from Apache PDFBox (wich I'm investigating now).

```
[2020-10-28T14:52:27,849][ERROR][o.e.b.ElasticsearchUncaughtExceptionHandler] [es-node] fatal error in thread [elasticsearch[es-node][write][T#7]], exiting
java.lang.StackOverflowError: null
	at java.util.regex.Pattern$BmpCharPredicate.lambda$union$2(Pattern.java:5692) ~[?:?]
	at java.util.regex.Pattern$BmpCharProperty.match(Pattern.java:4019) ~[?:?]
	at java.util.regex.Pattern$GroupHead.match(Pattern.java:4855) ~[?:?]
	at java.util.regex.Pattern$BranchConn.match(Pattern.java:4763) ~[?:?]
	at java.util.regex.Pattern$GroupTail.match(Pattern.java:4886) ~[?:?]
	at java.util.regex.Pattern$BmpCharProperty.match(Pattern.java:4020) ~[?:?]
	at java.util.regex.Pattern$GroupHead.match(Pattern.java:4855) ~[?:?]
	at java.util.regex.Pattern$Branch.match(Pattern.java:4800) ~[?:?]
	at java.util.regex.Pattern$Branch.match(Pattern.java:4798) ~[?:?]
	at java.util.regex.Pattern$Branch.match(Pattern.java:4798) ~[?:?]
	at java.util.regex.Pattern$BranchConn.match(Pattern.java:4763) ~[?:?]
	at java.util.regex.Pattern$GroupTail.match(Pattern.java:4886) ~[?:?]
	at java.util.regex.Pattern$BmpCharPropertyGreedy.match(Pattern.java:4394) ~[?:?]
	at java.util.regex.Pattern$GroupHead.match(Pattern.java:4855) ~[?:?]
	at java.util.regex.Pattern$Branch.match(Pattern.java:4800) ~[?:?]
	at java.util.regex.Pattern$BranchConn.match(Pattern.java:4763) ~[?:?]
	at java.util.regex.Pattern$GroupTail.match(Pattern.java:4886) ~[?:?]
	at java.util.regex.Pattern$BmpCharProperty.match(Pattern.java:4020) ~[?:?]
	at java.util.regex.Pattern$BmpCharPropertyGreedy.match(Pattern.java:4394) ~[?:?]
	at java.util.regex.Pattern$GroupHead.match(Pattern.java:4855) ~[?:?]
	at java.util.regex.Pattern$Branch.match(Pattern.java:4800) ~[?:?]
	at java.util.regex.Pattern$BmpCharProperty.match(Pattern.java:4020) ~[?:?]
	at java.util.regex.Pattern$Start.match(Pattern.java:3673) ~[?:?]
	at java.util.regex.Matcher.search(Matcher.java:1729) ~[?:?]
	at java.util.regex.Matcher.find(Matcher.java:773) ~[?:?]
	at java.util.Formatter.parse(Formatter.java:2702) ~[?:?]
	at java.util.Formatter.format(Formatter.java:2655) ~[?:?]
	at java.util.Formatter.format(Formatter.java:2609) ~[?:?]
	at java.lang.String.format(String.java:3292) ~[?:?]
	at java.util.logging.SimpleFormatter.format(SimpleFormatter.java:176) ~[?:?]
	at java.util.logging.StreamHandler.publish(StreamHandler.java:199) ~[?:?]
	at java.util.logging.ConsoleHandler.publish(ConsoleHandler.java:95) ~[?:?]
	at java.util.logging.Logger.log(Logger.java:979) ~[?:?]
	at java.util.logging.Logger.doLog(Logger.java:1006) ~[?:?]
	at java.util.logging.Logger.logp(Logger.java:1172) ~[?:?]
	at org.apache.commons.logging.impl.Jdk14Logger.log(Jdk14Logger.java:87) ~[?:?]
	at org.apache.commons.logging.impl.Jdk14Logger.warn(Jdk14Logger.java:260) ~[?:?]
	at org.apache.pdfbox.pdmodel.PDPageTree.getKids(PDPageTree.java:159) ~[?:?]
	at org.apache.pdfbox.pdmodel.PDPageTree.access$200(PDPageTree.java:41) ~[?:?]
	at org.apache.pdfbox.pdmodel.PDPageTree$PageIterator.enqueueKids(PDPageTree.java:183) ~[?:?]
	at org.apache.pdfbox.pdmodel.PDPageTree$PageIterator.enqueueKids(PDPageTree.java:186) ~[?:?]
	at org.apache.pdfbox.pdmodel.PDPageTree$PageIterator.enqueueKids(PDPageTree.java:186) ~[?:?]
	at org.apache.pdfbox.pdmodel.PDPageTree$PageIterator.enqueueKids(PDPageTree.java:186) ~[?:?]
	at org.apache.pdfbox.pdmodel.PDPageTree$PageIterator.enqueueKids(PDPageTree.java:186) ~[?:?]
	at org.apache.pdfbox.pdmodel.PDPageTree$PageIterator.enqueueKids(PDPageTree.java:186) ~[?:?]
	at org.apache.pdfbox.pdmodel.PDPageTree$PageIterator.enqueueKids(PDPageTree.java:186) ~[?:?]
	at org.apache.pdfbox.pdmodel.PDPageTree$PageIterator.enqueueKids(PDPageTree.java:186) ~[?:?]
	at org.apache.pdfbox.pdmodel.PDPageTree$PageIterator.enqueueKids(PDPageTree.java:186) ~[?:?]
	at org.apache.pdfbox.pdmodel.PDPageTree$PageIterator.enqueueKids(PDPageTree.java:186) ~[?:?]

```

But I think that problems that come from plugins used by ES should not affect the integrity of the node. Maybe it would be interesting to have some treat to just return an error in the request instead of killing the entire node. There is a flag that can be set in the pipelines (ignore\_failure), but this did not solve this situation. Don't you think so?

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_[View the full topic](https://discuss.elastic.co/t/stackoverflow-on-elasticsearch-file-indexation-with-ingest-attachment/253455)._