Github user jinfengni commented on a diff in the pull request:
https://github.com/apache/drill/pull/519#discussion_r67709299
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/planner/logical/partition/PruneScanRule.java
---
@@ -320,7 +377,17 @@ protected void doOnMatch(RelOptRuleCall call, Filter
filterRel, Project projectR
condition = condition.accept(reverseVisitor);
pruneCondition = pruneCondition.accept(reverseVisitor);
- RelNode inputRel = descriptor.createTableScan(newPartitions);
+ String cacheFileRoot = null;
+ if (checkForSingle && isSinglePartition) {
+ // if metadata cache file could potentially be used, then assign a
proper cacheFileRoot
+ String path = "";
+ for (int j = 0; j <= maxIndex; j++) {
+ path += "/" + spInfo[j];
--- End diff --
Related to Line 313, here we do not check spInfo[j] == null ?
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