jackylk commented on a change in pull request #3557: [CARBONDATA-3649] Hive
expression is pushed down to carbon
URL: https://github.com/apache/carbondata/pull/3557#discussion_r363070688
##########
File path:
hadoop/src/main/java/org/apache/carbondata/hadoop/api/CarbonInputFormat.java
##########
@@ -455,7 +459,26 @@ protected DataMapFilter getFilterPredicates(Configuration
configuration) {
try {
String filterExprString = configuration.get(FILTER_PREDICATE);
if (filterExprString == null) {
- return null;
+ String expr = configuration.get(TableScanDesc.FILTER_EXPR_CONF_STR);
+ if (expr == null) {
+ return null;
+ }
+ ExprNodeGenericFuncDesc exprNodeGenericFuncDesc =
+ Utilities.deserializeObject(expr, ExprNodeGenericFuncDesc.class);
+ LOG.debug("hive expression:" +
exprNodeGenericFuncDesc.getGenericUDF());
+ LOG.debug("hive expression string:" +
exprNodeGenericFuncDesc.getExprString());
+ Expression expression =
+
Hive2CarbonExpression.convertExprHive2Carbon(exprNodeGenericFuncDesc);
Review comment:
Can we do this filter expression conversion in MapredCarbonInputFormat.java
(in carbondata-hive module) and set the FILTER_PREDICATE in the hadoop
configuration, so that we donot need to add hive-exec dependency in
carbondata-hadoop/flink/presto module.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
With regards,
Apache Git Services
