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Posted to issues@hawq.apache.org by "Grant Krieger (JIRA)" <ji...@apache.org> on 2017/11/10 13:02:00 UTC
[jira] [Updated] (HAWQ-1547) Increase default table name length
from 64 to 128 to match Hive
[ https://issues.apache.org/jira/browse/HAWQ-1547?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Grant Krieger updated HAWQ-1547:
--------------------------------
Description:
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 hcatalog.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
Line: 1
Thanks
Grant
was:
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
> 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 hcatalog.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
> Line: 1
> Thanks
> Grant
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