Github user jinfengni commented on a diff in the pull request:
https://github.com/apache/drill/pull/519#discussion_r67716686
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/store/dfs/FileSelection.java
---
@@ -47,16 +47,25 @@
private List<FileStatus> statuses;
public List<String> files;
+ /**
+ * root path for the selections
+ */
public final String selectionRoot;
+ /**
+ * root path for the metadata cache file (if any)
+ */
+ public final String cacheFileRoot;
--- End diff --
When singlePartitionOpt is applied, is it possible to update selectionRoot
to be cacheFileRoot? That is, we do not maintain cacheFileRoot separately. In
stead, a FileSelection with updated selectionRoot is used when
singlePartitionOpt is applied.
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