help.txt

php process.php [--host HOSTNAME:PORT] [--index INDEX] [--type TYPE]
                [--query  QUERY] [--stm  TIMEOUT] [--fields FIELD1,FIELD2]
                [--size SIZE] [--csvfile CSVPATH] [--logfile LOGPATH] [--async NUMBER_OF_SLICE]  
                
Optional argument

--host      HOST:PORT       Elasticsearch hostname with port e.g. example.com:9200             [required]
--index     NAME            Index name                                                         [required]
--type      TYPE            Specified type
--query     QUERY           Query string in Lucene syntax    
--stm       TIME            Value in seconds to open search context in Scroll API. By default
                            it set to 30.                                             
         
--fields    field1,field2   Specify Field need to fetch with comma sperated.
                            It won't work for nested fields.                                   [required] 

--size      SIZE            Per scroll api how much data should fetch in one call. By Default
                            it set to 100.                                                     

--csvfile   CSVPATH         Path to csv file where to export.                                  [required]                         
--logfile   LOGFILEPATH     Path to log file where log will be write. 
--async     2               The maximum number of slices for scroll API. It will fork same
                            Number of child process.