topic Re: Memory setup for HIVE in SAS in SAS Data Management

Memory setup for HIVE in SAS

SASAna — Wed, 07 Mar 2018 17:20:13 GMT

Hi SAS users,

I am trying to create Table using PROC SQL connecting to Hadoop to pull the data from hive tables. I am getting memory issue and i have asked to SET mapreduce.map.memory.mb=6000; in my SAS code. I tried adding it as option and it is erroring .

Can anyone suggest me where and how to use memory setting for Hive data pull's.

CONNECT TO HADOOP (user=&user. password=&password. server="XXXX" port=10039 subprotocol=hive2 DBMAX_TEXT=80
30 ! mapreduce.map.memory.mb=6000 );
ERROR: Invalid option name mapreduce.map.memory.mb.

Thanks,

Ana

Re: Memory setup for HIVE in SAS

SASKiwi — Sun, 11 Mar 2018 01:13:17 GMT

I suspect you need to use the PROPERTIES = option like properties = 'MyProperties' as in this link:

http://documentation.sas.com/?docsetId=acreldb&docsetTarget=p0ly2onqqpbys8n1j9lra8qa6q20.htm&docsetVersion=9.4&locale=en

While the link is for the LIBNAME statement you could try it in a CONNECT statement.

Re: Memory setup for HIVE in SAS

moorsd — Thu, 22 Mar 2018 10:41:53 GMT

SASKiwi is correct. You'll need to add the mapreduce option using PROPERTIES. See example below:

PROPERTIES="hive.fetch.task.conversion=minimal;hive.fetch.task.conversion .threshold=-1";

i.e.

proc sql;
connect to hadoop ......

PROPERTIES="hive.groupby.orderby.position.alias=true");

(
select X_FACILITY_OFFER_CD,

count(*) as count, sum(X_FACILITY_OFFERED_AMT) as X_FACILITY_OFFERED_AMT_SUM, sum(X_FACILITY_OFFER_SEQ_NO) as X_FACILITY_OFFER_SEQ_NO_SUM

from UC5_TEST3A group by 1 order by 1

);
disconnect from hadoop;

quit;

The PROPERTIES option can be added on either the libname statement or Hadoop connection string in Explicit pass-through, as you used in your example.

Also, depending on how the Hadoop environment has been set up, altering the memory for a map task via SAS code may not change the memory for the map task. This could be locked down by the Hadoop administrator.