I'm tring to use logstash to synchronize mysql tables to elasticsearch. At first there was only one input for synchronizing table 'article' and went well. Then I appended another input for synchronizing table 'user', but the second index 'user_index' is not created and data is not imported to elasticsearch.
input {
    jdbc {
        jdbc_connection_string => ""
        jdbc_user => ""
        jdbc_password => ""
        schedule => "* * * * *"
        jdbc_validate_connection => true
        jdbc_driver_library => ""
        jdbc_driver_class => "com.mysql.jdbc.Driver"
    	jdbc_paging_enabled => true
    	tracking_column => "unix_ts_in_secs"
    	use_column_value => true
    	tracking_column_type => "numeric"
	    statement => "SELECT *, UNIX_TIMESTAMP(modify_time) AS unix_ts_in_secs FROM article WHERE (UNIX_TIMESTAMP(modify_time) > :sql_last_value AND modify_time < NOW()) ORDER BY modify_time ASC"
	    tags => ["article"]
    }
    
    jdbc {
       jdbc_connection_string => ""
        jdbc_user => ""
        jdbc_password => ""
        schedule => "* * * * *"
        jdbc_validate_connection => true
        jdbc_driver_library => ""
        jdbc_driver_class => "com.mysql.jdbc.Driver"
    	jdbc_paging_enabled => true
    	tracking_column => "unix_ts_in_secs"
    	use_column_value => true
    	tracking_column_type => "numeric"
	    statement => "SELECT id, name, avatar, UNIX_TIMESTAMP(modify_time) AS unix_ts_in_secs FROM user WHERE (UNIX_TIMESTAMP(modify_time) > :sql_last_value AND modify_time < NOW()) ORDER BY modify_time ASC"
    	tags => ["user"]
    }
}
output {
    if "article" in [tags] {
        elasticsearch {
            index => "article_index"
            document_id => "%{id}"
        }
    }
    if "user" in [tags] {
        elasticsearch {
            index => "user_index"
            document_id => "%{id}"
        }
    }
    stdout { 
	    codec => rubydebug
    }
}