Ex twitter join

sample-solutions/OSN/tw-join.pig

@@ -2,7 +2,7 @@
 A = LOAD 'sample-input/OSN/tw.txt' AS (id: long, fr: long);
 
 good_dataA = FILTER A BY id is not null and fr is not null;
-good_dataB = good_dataB;
+good_dataB = good_dataA;
 DUMP good_dataA;
 
 -- TODO: compute all the two-hop paths 

sample-solutions/OSN/tw-join.pig~

 -- TODO: load the input dataset, located in ./local-input/OSN/tw.txt
 A = LOAD 'sample-input/OSN/tw.txt' AS (id: long, fr: long);
 
-good_dataA = FILTER dataset BY id is not null and fr is not null;
+good_dataA = FILTER A BY id is not null and fr is not null;
 good_dataB = good_dataB;
 DUMP good_dataA;