paul-rogers commented on a change in pull request #1696: DRILL-7095: Expose
table schema (TupleMetadata) to physical operator (EasySubScan)
URL: https://github.com/apache/drill/pull/1696#discussion_r266213253
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/store/dfs/easy/EasyGroupScan.java
##########
@@ -302,4 +316,9 @@ public FileGroupScan clone(FileSelection selection) throws
IOException {
public boolean canPushdownProjects(List<SchemaPath> columns) {
return formatPlugin.supportsPushDown();
}
+
+ @JsonProperty
+ public TupleMetadata getSchema() {
+ return formatPlugin.getSchema();
Review comment:
Again, schema should be a property of this class. Once it is, the pointer to
the schema must be copied to the sub-scan class in the getSpecificScan() method.
It is the sub-scan that will be serialized out to the physical plan, then
deserialized on each worker node.
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