[PIG-4482] Pig pushes matches operator to HCatLoader causing script to fail

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 0.12.0
• Assignee: Unassigned
• Reporter: Rohini Palaniswamy
• Created: 24/Mar/15 21:40
• Updated: 24/Mar/15 21:40

Description

HCatLoader fails with as it cannot understand the matches operator. Even if we don't push down, specifying regular expression in partition key will be bad for performance as it will scan the whole table. Need to see if hcat can indeed support basic wildcard regular expression and translate it to LIKE clause in database query.

java.io.IOException: MetaException(message:Error parsing partition filter;
lexer error: null; exception NoViableAltException(11@[]))
        at
org.apache.hcatalog.mapreduce.HCatInputFormat.setInput(HCatInputFormat.java:95)
        at
org.apache.hcatalog.mapreduce.HCatInputFormat.setInput(HCatInputFormat.java:59)
        at org.apache.hcatalog.pig.HCatLoader.setLocation(HCatLoader.java:121)

Issue Links

• is broken by: PIG-2778 Add 'matches' operator to predicate pushdown