diff options
Diffstat (limited to 'pig/filter-cdx-paper-pdfs.pig')
| -rw-r--r-- | pig/filter-cdx-paper-pdfs.pig | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/pig/filter-cdx-paper-pdfs.pig b/pig/filter-cdx-paper-pdfs.pig index 6559066..7e10720 100644 --- a/pig/filter-cdx-paper-pdfs.pig +++ b/pig/filter-cdx-paper-pdfs.pig @@ -16,7 +16,7 @@ cdx = FILTER cdx BY not STARTSWITH (cdxline, 'filedesc'); cdx = FILTER cdx BY not STARTSWITH (cdxline, ' '); cdx = FOREACH cdx GENERATE STRSPLIT(cdxline,'\\s+') as cols, cdxline; -cdx = FOREACH cdx GENERATE (chararray)cols.$0 as surt, (chararray)cols.$1 as timestamp, (chararray)cols.$3 as mimetype, (chararray)cols.$4 as httpstatus, cdxline; +cdx = FOREACH cdx GENERATE (chararray)cols.$0 as surt, (chararray)cols.$1 as timestamp, (chararray)cols.$3 as mimetype, (chararray)cols.$4 as httpstatus, (chararray)cols.$5 as sha1sum, cdxline; cdx = FILTER cdx BY not surt matches '-'; cdx = FILTER cdx BY httpstatus matches '200'; cdx = FILTER cdx BY mimetype matches '.*pdf.*'; @@ -35,7 +35,13 @@ cdx = FILTER cdx -- DOI-like pattern in URL OR surt matches '.*\\).*/10\\.\\d{3,5}/.*'; -cdx = ORDER cdx by surt, timestamp PARALLEL 50; -cdx = FOREACH cdx GENERATE cdxline; -STORE cdx INTO '$OUTPUT' USING PigStorage(' '); +-- DISTINCT by sha1 column +cdx_uniq = FOREACH (GROUP cdx BY sha1sum) { + r = TOP(1, 0, $1); + GENERATE FLATTEN(r); +}; + +cdx_uniq = ORDER cdx_uniq by surt, timestamp PARALLEL 50; +cdx_uniq = FOREACH cdx_uniq GENERATE cdxline; +STORE cdx_uniq INTO '$OUTPUT' USING PigStorage(' '); |