Hello Olivier, I've tried 'cat'. This is the error I get: 'cat: Source must be a file.' This happens when I try to get all parts from a directory as a single .csv file.
Something like that: hadoop dfs -cat hdfs://master:54310/user/hadoop-user/output/solr/ cat: Source must be a file. This is what the dir looks like hadoop dfs -ls hdfs://master:54310/user/hadoop-user/output/solr/ Found 3 items drwxr-xr-x - hadoop supergroup 0 2010-03-12 16:36 /user/hadoop-user/output/solr/_logs -rw-r--r-- 2 hadoop supergroup 64882566 2010-03-12 16:36 /user/hadoop-user/output/solr/part-00000 -rw-r--r-- 2 hadoop supergroup 51388943 2010-03-12 16:36 /user/hadoop-user/output/solr/part-00001 It seems -get can merge everything to one file, but cannot output to sdtout while 'cat' can do stdout, but it seems I have to fetch the parts one by one. Or am I missing something? thanks, alex On Tue, Mar 16, 2010 at 11:28 AM, Varene Olivier <var...@echo.fr> wrote: > Hello Alex, > > get writes down a file on your FileSystem > > hadoop dfs [-get [-ignoreCrc] [-crc] <src> <localdst>] > > with > src : your file in your hdfs > localdst : the name of the file with the collected data (from src) on > your local filesystem > > > To get the results to STDOUT, > you can use cat > > hadoop dfs [-cat <src>] > > with src : your file in your hdfs > > Regards > Olivier > > Alex Parvulescu a écrit : > > Hello, >> >> Is there a reason for which 'hadoop dfs -get' will not output to stdout? >> >> I see 'hadoop dfs -put' can handle stdin. It would seem that dfs would >> have to also support outputing to stdout. >> >> >> thanks, >> alex >> >> >> >>
