# Request help with a grok filter pattern for date

**URL:** <https://discuss.elastic.co/t/request-help-with-a-grok-filter-pattern-for-date/60997>\
**Category:** Logstash\
**Created:** [September 20, 2016, 9:45am UTC](https://discuss.elastic.co/t/request-help-with-a-grok-filter-pattern-for-date/60997 "2016-09-20T09:45:03Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![RaviSidhu](https://avatars.discourse-cdn.com/v4/letter/r/ed8c4c/32.png) [@RaviSidhu](https://discuss.elastic.co/u/RaviSidhu)\
**Post date:** [September 20, 2016, 9:45am UTC](https://discuss.elastic.co/t/request-help-with-a-grok-filter-pattern-for-date/60997/1 "2016-09-20T09:45:03Z")

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Hi All,

I have a csv log file with column names and a sample record as

```
access_date,clientIP,Col1, Col2, Col3, Col4_uri_path, col5_referrer,col6_response, col7_hit_count,col8_referrer

```

`'13/Jan/2016:22:57:38','111.222.333.444','String1','String2','String3,` `optional_substring4','substring5/substring6/substring7/substring8','','200','1',''`

My grok filter is  
`grok {`  
`match => { "message" => "%{MONTHDAY}/%{MONTH}/%{YEAR}:%{TIME} %{IPORHOST:clientip} %``{NOTSPACE:Col1} %{NOTSPACE:Col2} %{NOTSPACE:Col3} %{URIPATHPARAM:Col4_uri_path} %``{QS:Col5_referrer} %{NUMBER:Col6_response} %{NUMBER:Col7_hit_count} %{QS:col8_referrer}" }`  
`}`

I get a [0] "\_grokparsefailure" error. Could you please help me with the pattern?

Thank you for all the help.

Best regards,

---

<div class="post-metadata">

**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [September 20, 2016, 8:05pm UTC](https://discuss.elastic.co/t/request-help-with-a-grok-filter-pattern-for-date/60997/2 "2016-09-20T20:05:41Z")

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Why not use a csv filter to parse this CSV data?

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<div class="post-metadata">

**Author:** ![RaviSidhu](https://avatars.discourse-cdn.com/v4/letter/r/ed8c4c/32.png) [@RaviSidhu](https://discuss.elastic.co/u/RaviSidhu)\
**Post date:** [September 26, 2016, 10:55am UTC](https://discuss.elastic.co/t/request-help-with-a-grok-filter-pattern-for-date/60997/3 "2016-09-26T10:55:51Z")

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Thank you! I tried using the csv filter and it worked much better. Actually I didn't know of the csv filter and I had used grok filter once before, so I stuck to grok.

Best regards,

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 4:36am UTC](https://discuss.elastic.co/t/request-help-with-a-grok-filter-pattern-for-date/60997/4 "2017-07-06T04:36:55Z")

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