Github user takuti commented on a diff in the pull request:
https://github.com/apache/incubator-hivemall/pull/107#discussion_r134135290
--- Diff: core/src/main/java/hivemall/UDAFEvaluatorWithOptions.java ---
@@ -0,0 +1,97 @@
+package hivemall;
+
+import hivemall.utils.lang.CommandLineUtils;
+import org.apache.commons.cli.CommandLine;
+import org.apache.commons.cli.HelpFormatter;
+import org.apache.commons.cli.Options;
+import org.apache.hadoop.hive.ql.exec.Description;
+import org.apache.hadoop.hive.ql.exec.MapredContext;
+import org.apache.hadoop.hive.ql.exec.UDFArgumentException;
+import org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator;
+import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
+import org.apache.hadoop.mapred.Counters;
+import org.apache.hadoop.mapred.Reporter;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+
+public abstract class UDAFEvaluatorWithOptions extends
GenericUDAFEvaluator {
+
+ @Nullable
+ protected MapredContext mapredContext;
+
+ @Override
+ public final void configure(MapredContext mapredContext) {
+ this.mapredContext = mapredContext;
+ }
+
+ @Nullable
+ protected final Reporter getReporter() {
+ if (mapredContext == null) {
+ return null;
+ }
+ return mapredContext.getReporter();
+ }
+
+ protected static void reportProgress(@Nullable Reporter reporter) {
+ if (reporter != null) {
+ synchronized (reporter) {
+ reporter.progress();
+ }
+ }
+ }
+
+ protected static void setCounterValue(@Nullable Counters.Counter
counter, long value) {
--- End diff --
Since `org.apache.hadoop.mapred.Counters` is only used for pointing to
`org.apache.hadoop.mapred.Counters.Counter`, you can directly import
`org.apache.hadoop.mapred.Counters.Counter` like `UDTFWithOptions`.
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