# Regular expression has redundant nested repeat operator messages

**URL:** https://discuss.elastic.co/t/regular-expression-has-redundant-nested-repeat-operator-messages/232482
**Category:** Elasticsearch
**Created:** [May 13, 2020, 4:42pm UTC](https://discuss.elastic.co/t/regular-expression-has-redundant-nested-repeat-operator-messages/232482 "2020-05-13T16:42:40Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![realyn\_elastic](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/realyn_elastic/32/47247_2.png) [@realyn\_elastic](https://discuss.elastic.co/u/realyn_elastic)
#### Post date: [May 13, 2020, 4:42pm UTC](https://discuss.elastic.co/t/regular-expression-has-redundant-nested-repeat-operator-messages/232482/1 "2020-05-13T16:42:40Z")

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I am seeing this lot of errors inside my /var/log/messages. Could someone help me to enlighten and fix this

regular expression has redundant nested repeat operator \* /(?:(?:(?:(?\<TIMESTAMP\_ISO8601:timestamp\>(?:(?\>\d\d){1,2})-(?:(?:0?[1-9]|1[0-2]))-(?:(?:(?:0[1-9])|(?:[12][0-9])|(?:3[01])|[1-9]))T :?(?:(?:[0-5][0-9]))(?::?(?:(?:(?:[0-5]?[0-9]|60)(?:[:.,][0-9]+)?)))?(?:(?:Z|+-(?::?(?:(?:[0-5][0-9])))))?): (?BASE10NUM:elasticsearch.gc.jvm\_runtime\_sec(?\<![0-9.+-])(?\>[+-]?(?:(?:[0-9]+(?:.[0-9]+)?)|(?:.[0-9]+)))):)|(?:[(?\<TIMESTAMP\_ISO8601:timestamp\>(?:(?\>\d\d){1,2})-(?:(?:0?[1-9]|1[0-2]))-(?:(?:(?:0[1-9])|(?:[12][0-9])|(?:3[01])|[1-9]))T :?(?:(?:[0-5][0-9]))(?::?(?:(?:(?:[0-5]?[0-9]|60)(?:[:.,][0-9]+)?)))?(?:(?:Z|+-(?::?(?:(?:[0-5][0-9])))))?)][(?POSINT:process.pid\b(?:[1-9][0-9]_)\b)][(?\<DATA:elasticsearch.gc.tags\>._?)(?:\s\*)\*])) Total time for which application threads were stopped: (?BASE10NUM:elasticsearch.gc.threads\_total\_stop\_time\_sec(?\<![0-9.+-])(?\>[+-]?(?:(?:[0-9]+(?:.[0-9]+)?)|(?:.[0-9]+)))) seconds, Stopping threads took: (?\<BASE10NUM:e

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### Author: ![Immac](https://avatars.discourse-cdn.com/v4/letter/i/13edae/32.png) [@Immac](https://discuss.elastic.co/u/Immac)
#### Post date: [May 15, 2020, 4:50pm UTC](https://discuss.elastic.co/t/regular-expression-has-redundant-nested-repeat-operator-messages/232482/2 "2020-05-15T16:50:52Z")

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I'm also seeing the same when we upgraded from 7.4 to 7.7

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### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [June 12, 2020, 4:50pm UTC](https://discuss.elastic.co/t/regular-expression-has-redundant-nested-repeat-operator-messages/232482/3 "2020-06-12T16:50:53Z")

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