Github user paul-rogers commented on a diff in the pull request:
https://github.com/apache/drill/pull/660#discussion_r91635970
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/compile/CodeCompiler.java ---
@@ -33,36 +32,71 @@
import com.google.common.cache.LoadingCache;
import com.google.common.collect.Lists;
+/**
+ * Global code compiler mechanism shared by all threads and operators.
+ * Holds a single cache of generated code (keyed by code source) to
+ * prevent compiling identical code multiple times. Supports both
+ * the byte-code merging and plain-old Java methods of code
+ * generation and compilation.
+ */
+
public class CodeCompiler {
-// private static final org.slf4j.Logger logger =
org.slf4j.LoggerFactory.getLogger(CodeCompiler.class);
+
+ public static final String COMPILE_BASE = "drill.exec.compile";
+ String MAX_LOADING_CACHE_SIZE_CONFIG = COMPILE_BASE + ".cache_max_size";
--- End diff --
Done.
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