If creating a table does not work with the above provided schema, you can try using the schema below:
CREATE EXTERNAL TABLE mybucket_logs
(
bucketowner
string COMMENT '',
bucket_name
string COMMENT '',
requestdatetime
string COMMENT '',
remoteip
string COMMENT '',
requester
string COMMENT '',
requestid
string COMMENT '',
operation
string COMMENT '',
key
string COMMENT '',
request_uri
string COMMENT '',
httpstatus
string COMMENT '',
errorcode
string COMMENT '',
bytessent
bigint COMMENT '',
objectsize
bigint COMMENT '',
totaltime
string COMMENT '',
turnaroundtime
string COMMENT '',
referrer
string COMMENT '',
useragent
string COMMENT '',
versionid
string COMMENT '',
hostid
string COMMENT '',
sigv
string COMMENT '',
ciphersuite
string COMMENT '',
authtype
string COMMENT '',
endpoint
string COMMENT '',
tlsversion
string COMMENT '')
ROW FORMAT SERDE
'org.apache.hadoop.hive.serde2.RegexSerDe'
WITH SERDEPROPERTIES (
'input.regex'='([^ ]) ([^ ]) \[(.?)\] ([^ ]) ([^ ]) ([^ ]) ([^ ]) ([^ ]) ("[^"]"|-) (-|[0-9]) ([^ ]) ([^ ]) ([^ ]) ([^ ]) ([^ ]) ([^ ]) ("[^"]"|-) ([^ ])(?: ([^
]) ([^ ]) ([^ ]) ([^ ]) ([^ ]) ([^ ]))?.*$')
STORED AS INPUTFORMAT
'org.apache.hadoop.mapred.TextInputFormat'
OUTPUTFORMAT
'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
LOCATION
's3://bucket-name/prefix-name/account-id/region/source-bucket-name/'