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_r266212977
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/store/dfs/WorkspaceSchemaFactory.java
##########
@@ -572,9 +573,21 @@ public Table getTable(String tableName) {
}
final DrillTable table = tables.get(tableKey);
setMetadataTable(table, tableName);
+ setSchema(table, tableName);
return table;
}
+ private void setSchema(DrillTable table, String tableName) {
+ if
(schemaConfig.getOption(ExecConstants.STORE_TABLE_USE_SCHEMA_FILE).bool_val) {
+ try {
+ FsMetastoreSchemaProvider schemaProvider = new
FsMetastoreSchemaProvider(this, tableName);
+ table.setSchema(schemaProvider.read().getSchema());
+ } catch (IOException e) {
+ logger.debug("Unable to deserialize schema from schema file for
table: " + tableName, e);
Review comment:
In the future, this might handle other schema sources than just the file.
This is a perfectly fine implementation for getting started; just something to
remember for later.
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