[teiid-issues] [JBoss JIRA] (TEIID-3621) HBase translator - UPDATE statement requires primary key
Juraj Duráni (JIRA)
issues at jboss.org
Tue Aug 11 04:09:03 EDT 2015
Juraj Duráni created TEIID-3621:
-----------------------------------
Summary: HBase translator - UPDATE statement requires primary key
Key: TEIID-3621
URL: https://issues.jboss.org/browse/TEIID-3621
Project: Teiid
Issue Type: Bug
Affects Versions: 8.7.1.6_2
Environment: Hbase: 1.1.1
Phoenix: 4.5.0-HBase-1.1
Reporter: Juraj Duráni
Assignee: Steven Hawkins
The HBase translator requires table to have a primary key defined. Is the PK really needed? If the table has no PK defined, then all columns are PK. E.g. query *UPDATE hbase.SmallA SET StringNum = '555' WHERE hbase.SmallA.StringNum IS NULL* is translated as *UPSERT INTO smalla (stringnum, intkey) SELECT '555', smalla.intkey FROM smalla WHERE smalla.stringnum IS NULL* (intkey is PK). Teiid can simply add all columns (except those defined in 'SET').
Yes, I know that HBase requires the PK to be defined, but what happen if a user decide to change PK in VDB [1]? It could be a problem whether PK is in VDB defined or not.
I suggest to add a hbase-translator-specific execution property which define PK in the source table and remove AssertionError [2].
[1]
*HBase table:* create table mytable(id integer primary key, nickname varchar(1))
*Teiid table:* create table mytable(id integer, username varchar(1) primary key)
Both, id and username, are valid PK (artificial/natural).
[2]
https://github.com/teiid/teiid/blob/master/connectors/translator-hbase/src/main/java/org/teiid/translator/hbase/HBaseSQLConversionVisitor.java#L72
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
More information about the teiid-issues
mailing list