# Stackoverflow error on logstash when using es\_bulk codec **URL:** \ **Category:** Logstash\ **Created:** [March 9, 2023, 8:53am UTC](https://discuss.elastic.co/t/stackoverflow-error-on-logstash-when-using-es-bulk-codec/327337 "2023-03-09T08:53:12Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![eeijlar](https://avatars.discourse-cdn.com/v4/letter/e/96bed5/32.png) [@eeijlar](https://discuss.elastic.co/u/eeijlar)\ **Post date:** [March 9, 2023, 8:53am UTC](https://discuss.elastic.co/t/stackoverflow-error-on-logstash-when-using-es-bulk-codec/327337/1 "2023-03-09T08:53:12Z")
Using the following pipeline with logstash: ```auto - pipeline.id: export-process pipeline.workers: 4 config.string: | input { elasticsearch { hosts => "http://elastic:80/elasticsearch/" user => "elastic" password => "" ssl => "false" index => "metricbeat-*" docinfo => true query => '{ "query": { "bool": { "filter": { "range": { "@timestamp": { "gte": "now-35m", "lte": "now", "format": "strict_date_optional_time||epoch_millis" } } } } } }' } } output { file { gzip => "true" codec => es_bulk path => "/usr/share/logstash/export/export_%{[@metadata][_index]}.json.gz" } } ``` I get the following error: ```auto Sending Logstash logs to /usr/share/logstash/logs which is now configured via log4j2.properties warning: thread "[export-process]>worker1" terminated with exception (report_on_exception is true): warning: thread "[export-process]>worker2" terminated with exception (report_on_exception is true): java.lang.StackOverflowError at usr.share.logstash.logstash_minus_core.lib.logstash.codecs.base.encode(/usr/share/logstash/logstash-core/lib/logstash/codecs/base.rb:48) at usr.share.logstash.logstash_minus_core.lib.logstash.codecs.base.multi_encode(/usr/share/logstash/logstash-core/lib/logstash/codecs/base.rb:64) ``` I am using logstash 7.17.7. I have checked the codec is listed as plugin: ```auto logstash@60961b0afe3b:~$ logstash-plugin list Using bundled JDK: /usr/share/logstash/jdk OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release. logstash-codec-avro logstash-codec-cef logstash-codec-collectd logstash-codec-dots logstash-codec-edn logstash-codec-edn_lines logstash-codec-es_bulk logstash-codec-fluent logstash-codec-graphite logstash-codec-json logstash-codec-json_lines ``` I see this issue listed: > > > logstash 7.15.2, installed using yum, run from the command line. The following c…onfiguration > > input { generator { count =\> 1 lines =\> \['' \] } } > output { udp { port =\> 2055 codec =\> netflow host =\> "127.1.2.3" } } > > results in > > warning: thread "\[main\]\>worker0" terminated with exception (report\_on\_exception is true): > java.lang.StackOverflowError > at usr.share.logstash.logstash\_minus\_core.lib.logstash.codecs.base.encode(/usr/share/logstash/logstash-core/lib/logstash/codecs/base.rb:48) > at usr.share.logstash.logstash\_minus\_core.lib.logstash.codecs.base.multi\_encode(/usr/share/logstash/logstash-core/lib/logstash/codecs/base.rb:64) > at org.jruby.RubyArray.each(org/jruby/RubyArray.java:1820) > at usr.share.logstash.logstash\_minus\_core.lib.logstash.codecs.base.multi\_encode(/usr/share/logstash/logstash-core/lib/logstash/codecs/base.rb:64) > at usr.share.logstash.logstash\_minus\_core.lib.logstash.codecs.base.encode(/usr/share/logstash/logstash-core/lib/logstash/codecs/base.rb:48) > at usr.share.logstash.logstash\_minus\_core.lib.logstash.codecs.base.multi\_encode(/usr/share/logstash/logstash-core/lib/logstash/codecs/base.rb:64) > at org.jruby.RubyArray.each(org/jruby/RubyArray.java:1820) > > because in \[codec/base.rb\](https://github.com/elastic/logstash/blob/3aa5741e687ab602169b4a716ff8820f622dd92b/logstash-core/lib/logstash/codecs/base.rb#L47) encode calls multi\_encode, which calls encode. > > Personally I think the netflow codec should be modified to add an encode method which throws an exception saying "You cannot use this codec on an output". but that is for a different codec. ---
**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\ **Post date:** [March 9, 2023, 2:17pm UTC](https://discuss.elastic.co/t/stackoverflow-error-on-logstash-when-using-es-bulk-codec/327337/2 "2023-03-09T14:17:45Z")
> [@eeijlar](#): > > but that is for a different codec Not exactly. The base codec class assumes that a codec class will override the encode or multi\_encode method. If it does not then it will get a stack overflow. The issue you linked to used the example of the netflow codec, but it applies to any other codec as well. The fix would be for the es\_bulk codec to implement an encode method that raises a "not implemented" exception (similar to the [decode](https://github.com/logstash-plugins/logstash-codec-dots/blob/ab1534e594bda9aa56437bb40aff16bef82af948/lib/logstash/codecs/dots.rb#L8) in a dots codec) ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [April 6, 2023, 2:18pm UTC](https://discuss.elastic.co/t/stackoverflow-error-on-logstash-when-using-es-bulk-codec/327337/3 "2023-04-06T14:18:39Z")
This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.