apache pig - Issues saving to Hive table from Pig -

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i using hcatalog read , write data hive pig script follows:

a = load 'customer' using org.apache.hcatalog.pig.hcatloader();  b = load 'address' using org.apache.hcatalog.pig.hcatloader();  c = join cmr_id,b cmr_id;  store c 'cmr_address_join' using org.apache.hcatalog.pig.hcatstorer();

table definition customer is:

cmr_id                  int                      name                    string

address:

addr_id                 int                      cmr_id                  int                      address                 string

cmr_address_join:

cmr_id                  int                      name                    string                   addr_id                 int                      address                 string

when run this, pig throws following error:

error org.apache.pig.tools.grunt.grunt - error 1115: column names should in lowercase. invalid name found: a::cmr_id

i believe may because pig trying match pig generated file names hive columns , not matching (a::cmr_id versus cmr_id). think hcatalogstorer expecting alias cmr_id , not a::cmr_id. wish hcatalogstorer ignored alias prefix , considered field name. 

grunt>  describe c;  c: {a::cmr_id: int,a::name: chararray,b::addr_id: int,b::cmr_id: int,b::address: chararray}

is there way drop prefix of field in pig (i.e. a::)? or if has workaround or solution, great.

i know can use following explicitly add alias , work.

d = foreach c generate a::cmr_id cmr_id,a::name name, b::addr_id addr_id, b::address address;  store d 'cmr_address_join' using org.apache.hcatalog.pig.hcatstorer();

but problem is, have many tables each having hundreds of columns. become tedious specify alias above.

any fix appreciated.

you can use $0, $1 , on access columns , please rename them column name example : $0 cmr_id


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