# Maximum length of the CSV column parameter

**URL:** <https://discuss.elastic.co/t/maximum-length-of-the-csv-column-parameter/169961>\
**Category:** Logstash\
**Created:** [February 26, 2019, 9:30am UTC](https://discuss.elastic.co/t/maximum-length-of-the-csv-column-parameter/169961 "2019-02-26T09:30:18Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![CCH0124](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/cch0124/32/36436_2.png) [@CCH0124](https://discuss.elastic.co/u/CCH0124)\
**Post date:** [February 26, 2019, 9:30am UTC](https://discuss.elastic.co/t/maximum-length-of-the-csv-column-parameter/169961/1 "2019-02-26T09:30:18Z")

</div>

I have 18 headers when I set columns, but the index for kibana only shows 13 why?  
My settings：

```auto
filter {
        csv {
                separator => ","
                #autogenerate_column_names=> true
                columns=> [
                                "device_dev_name",
                                "device_family_name",
                                "device_hashed_mac",
                                "device_os_name",
                                "device_type_name",
                                "device_vendor_name",
                                "event_protocol_id",
                                "event_flow_outbound_or_inbound",
                                "event_role_device_or_router",
                                "event_role_server_or_client",
                                "event_rule_category",
                                "event_rule_id",
                                "event_rule_name",
                                "event_rule_reference",
                                "event_rule_severity",
                                "event_self_ipv4",
                                "event_time",
                                "router_ip"
                        ]
                #skip_header=> false
                #autodetect_column_names=> true
                #skip_empty_columns=> true
                #skip_empty_rows=> true
                #periodic_flush => true
                id => "csv"
                convert => {
                        "event_protocol_id" => "integer"
                }

        }

```

---

<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:** [March 26, 2019, 9:32am UTC](https://discuss.elastic.co/t/maximum-length-of-the-csv-column-parameter/169961/2 "2019-03-26T09:32:16Z")

</div>

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