Alan Choi 57b961168d IMP-1188 Fix HBase row key predicates issues ...

This patch fixes a few row key issues:

1. We used to assert that the row key filter must be a string literal.
However, it can also be a constant function. We need to eval the expr
and then use the result as the start/stop key.

2. Cast(row_key as int) simply failed.
This should not be transformed into start/stop key.

3. We used to assert that lower bound < upper bound.
This query:
  select * from tbl where row_key > 'b' and row_key < 'a'
would simply ASSERT. We should simply not return any rows.

4. Handle NULL predicate
HBase row key can't be null. If either upper/lower bound is null, we simply
don't need to return any rows.

Change-Id: Ia03590a862888b377bf1f48bcb838b99193fa241
Reviewed-on: http://gerrit.ent.cloudera.com:8080/1180
Reviewed-by: Alan Choi <alan@cloudera.com>
Tested-by: jenkins

2014-01-08 10:54:40 -08:00

2.3 KiB

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