json - How to Join 2 different variables in Pig? -

i total newbie pig , have written following pig script:

define format `format_text.py $emoji $acronym` ship ('$stream_file_path/format_text.py');  define parse `parse.sh` ship ('$stream_file_path_syntaxnet/parse.sh');  define process_roots `process_roots.py` ship ('$stream_file_path_syntaxnet/process_roots.py');  input_data = load '$data_input';  result1 = stream input_data through format; result2 = stream result1 through parse; result3 = stream result2 through process_roots;  result4 = foreach result1 generate concat (result1, result3);  store result1 '$data_output'; store result2 '$syntaxnet_output'; store result4 '$syntaxnet_results'; 

so, input_data json file of tweet.

1. format formats "text" field of json clean tweet.
2. parse runs cleaned json through syntaxnet generate dependency relations. output result2 looks like:

2 bank _ noun nnp _ 3 nn _ _

for each word of tweet (where second column word).

3. process_roots more processing on result2 , generates result3 json field looks like:

avl_tags_syntaxnet: [{'pos_tag': 'nnp', 'position': '1', 'dep_rel': 'nn', 'parent': '3', 'word': 'us'}, ....................... {'pos_tag': '.', 'position': '30', 'dep_rel': 'punct', 'parent': '23', 'word': '...'}]

now, want append newly created json field (result3) result1 , store somewhere. read concat in pig , wrote code result4 in pig script throws error. please tell me right way it.

concatenation fields, trying combine multiple aliases.

the way combine aliases join.

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based on how code structured, use (or add) unique identifier each line remains intact during various operations. in final phase join of them together.