Can't join HBase tables if one's name is the beginning of the other
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Key: HIVE-1903
URL: https://issues.apache.org/jira/browse/HIVE-1903
Project: Hive
Issue Type: Bug
Reporter: Jean-Daniel Cryans
Fix For: 0.7.0
I tried joining two tables, let's call them "table" and "table_a", but I'm
seeing an array of errors such as this:
{noformat}
java.lang.IndexOutOfBoundsException: Index: 3, Size: 3
at java.util.ArrayList.RangeCheck(ArrayList.java:547)
at java.util.ArrayList.get(ArrayList.java:322)
at
org.apache.hadoop.hive.hbase.HiveHBaseTableInputFormat.getRecordReader(HiveHBaseTableInputFormat.java:118)
at
org.apache.hadoop.hive.ql.io.HiveInputFormat.getRecordReader(HiveInputFormat.java:231)
{noformat}
The reason is that HiveInputFormat.pushProjectionsAndFilters matches the
aliases with startsWith so in my case the mappers for "table_a" were getting
the columns from "table" as well as its own (and since it had less column, it
was trying to get one too far in the array).
I don't know if just changing it to "equals" fill fix it, my guess is it won't,
since it may break RCFiles.
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