regex for access log in hive serde

Question

I want to extract out (ip, requestUrl, timeStamp) from the access logs to load to hive database. One line from access log is as follows.

66.249.68.6 - -          


        

Answer 1

Use double '\' and '.*' in the end (it's important!):

CREATE EXTERNAL TABLE access_log (
        `ip`                STRING,
        `time_local`        STRING,
        `method`            STRING,
        `uri`               STRING,
        `protocol`          STRING,
        `status`            STRING,
        `bytes_sent`        STRING,
        `referer`           STRING,
        `useragent`         STRING
        )
    ROW FORMAT SERDE 'org.apache.hadoop.hive.contrib.serde2.RegexSerDe'
    WITH SERDEPROPERTIES (
    'input.regex'='^(\\S+) \\S+ \\S+ \\[([^\\[]+)\\] "(\\w+) (\\S+) (\\S+)" (\\d+) (\\d+) "([^"]+)" "([^"]+)".*'
)
STORED AS TEXTFILE
LOCATION '/tmp/access_logs/';

P.S. Hive 0.7.1