Include only one element of schema in new schema ?
The contents of T are:
one 33 xxx
one 111 xxx
one 111 xxy
two 7 yzy
two 9 klm
two 11 klm
two 365 klm
four 3434 iti
So, we can see that for each hash, I can have multiple values. My goal, is to present the data like below:
one 33 xxx
one 111 xxy
two 7 yzy
two 9 klm
four 3434 iti
I am only interested in getting 1 of the values, I don't care which one it is.
The following is my approach, but it is not working, as expected.
I am running the job in Hadoop and it is running out of memory. If it did what I want it to do, I am only expecting 400 lines.
T = LOAD X AS (NAME:bytearray, VALUE:bytearray, HASH:bytearray);
NAME_HASH_GROUPED = GROUP X BY (name, hash);
NAME_VALUE_HASH = FOREACH NAME_HASH_GROUPED
GENERATE group, VALUE;
apache-pig
asked Dec 28 '18 at 5:36
Don CodeDon Code
1871616
add a comment |
The contents of T are:
one 33 xxx
one 111 xxx
one 111 xxy
two 7 yzy
two 9 klm
two 11 klm
two 365 klm
four 3434 iti
So, we can see that for each hash, I can have multiple values. My goal, is to present the data like below:
one 33 xxx
one 111 xxy
two 7 yzy
two 9 klm
four 3434 iti
I am only interested in getting 1 of the values, I don't care which one it is.
The following is my approach, but it is not working, as expected.
I am running the job in Hadoop and it is running out of memory. If it did what I want it to do, I am only expecting 400 lines.
T = LOAD X AS (NAME:bytearray, VALUE:bytearray, HASH:bytearray);
NAME_HASH_GROUPED = GROUP X BY (name, hash);
NAME_VALUE_HASH = FOREACH NAME_HASH_GROUPED
GENERATE group, VALUE;
apache-pig
asked Dec 28 '18 at 5:36
Don CodeDon Code
1871616
add a comment |
The contents of T are:
one 33 xxx
one 111 xxx
one 111 xxy
two 7 yzy
two 9 klm
two 11 klm
two 365 klm
four 3434 iti
So, we can see that for each hash, I can have multiple values. My goal, is to present the data like below:
one 33 xxx
one 111 xxy
two 7 yzy
two 9 klm
four 3434 iti
I am only interested in getting 1 of the values, I don't care which one it is.
The following is my approach, but it is not working, as expected.
I am running the job in Hadoop and it is running out of memory. If it did what I want it to do, I am only expecting 400 lines.
T = LOAD X AS (NAME:bytearray, VALUE:bytearray, HASH:bytearray);
NAME_HASH_GROUPED = GROUP X BY (name, hash);
NAME_VALUE_HASH = FOREACH NAME_HASH_GROUPED
GENERATE group, VALUE;
apache-pig
asked Dec 28 '18 at 5:36
Don CodeDon Code
1871616
The contents of T are:
one 33 xxx
one 111 xxx
one 111 xxy
two 7 yzy
two 9 klm
two 11 klm
two 365 klm
four 3434 iti
So, we can see that for each hash, I can have multiple values. My goal, is to present the data like below:
one 33 xxx
one 111 xxy
two 7 yzy
two 9 klm
four 3434 iti
I am only interested in getting 1 of the values, I don't care which one it is.
The following is my approach, but it is not working, as expected.
I am running the job in Hadoop and it is running out of memory. If it did what I want it to do, I am only expecting 400 lines.
T = LOAD X AS (NAME:bytearray, VALUE:bytearray, HASH:bytearray);
NAME_HASH_GROUPED = GROUP X BY (name, hash);
NAME_VALUE_HASH = FOREACH NAME_HASH_GROUPED
GENERATE group, VALUE;
apache-pig
apache-pig
asked Dec 28 '18 at 5:36
Don CodeDon Code
1871616
asked Dec 28 '18 at 5:36
Don CodeDon Code
1871616
asked Dec 28 '18 at 5:36
Don CodeDon Code
1871616
asked Dec 28 '18 at 5:36
Don CodeDon Code
1871616
asked Dec 28 '18 at 5:36
Don CodeDon Code
1871616
1871616
add a comment |
add a comment |
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