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Posted to issues@hawq.apache.org by "Grant Krieger (JIRA)" <ji...@apache.org> on 2017/11/10 12:22:00 UTC
[jira] [Created] (HAWQ-1547) Increase default table name length
from 64 to 128 to match Hive
Grant Krieger created HAWQ-1547:
-----------------------------------
Summary: Increase default table name length from 64 to 128 to match Hive
Key: HAWQ-1547
URL: https://issues.apache.org/jira/browse/HAWQ-1547
Project: Apache HAWQ
Issue Type: Improvement
Components: Unknown
Reporter: Grant Krieger
Assignee: Radar Lei
Hi,
Would it be possible to increase incubator-hawq/src/include/pg_config_manual.h property default NAMEDATALEN from 64 to 128.
This hopefully will allow one to be able to read Hive tables from Hawq larger than 64 by default without having to change this setting when compiling for downstream systems. It will also allow for equivalently name Hawq tables.
Does anyone foresee performance challenges with the increase?
See problem below:
In hive
CREATE TABLE default.test123456789123456789123456789123456789123456789123456789123456789123456789123456789test (
rtlymth int,
rtly int)
STORED AS ORC
in Hawq
select * from default.test123456789123456789123456789123456789123456789123456789123456789123456789123456789test
ERROR: remote component error (500) from '127.0.0.1:51200': type Exception report message NoSuchObjectException(message:default.test12345678912345678912345678912345678912345678912345678912345 table not found) description The server encountered an internal error that prevented it from fulfilling this request. exception javax.servlet.ServletException: NoSuchObjectException(message:default.test12345678912345678912345678912345678912345678912345678912345 table not found) (libchurl.c:897)
Position: 15
Thanks
Grant
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