Github user joshelser commented on a diff in the pull request:
https://github.com/apache/accumulo/pull/224#discussion_r103723297
--- Diff:
core/src/main/java/org/apache/accumulo/core/client/admin/SummaryRetriever.java
---
@@ -0,0 +1,107 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.accumulo.core.client.admin;
+
+import java.util.Collection;
+import java.util.List;
+
+import org.apache.accumulo.core.client.AccumuloException;
+import org.apache.accumulo.core.client.AccumuloSecurityException;
+import org.apache.accumulo.core.client.TableNotFoundException;
+import org.apache.accumulo.core.client.summary.SummarizerConfiguration;
+import org.apache.accumulo.core.client.summary.Summary;
+import org.apache.hadoop.io.Text;
+
+/**
+ * This interface allows configuring where and which summary data to
retrieve before retrieving it.
+ *
+ * @since 2.0.0
+ */
+public interface SummaryRetriever {
+
+ /**
+ * Summary data is only retrieved from data that has been written to
files. Data recently written to Accumulo may be in memory and there will not
show up in
+ * summary data. Setting this option to true force tablets in the range
to minor compact before summary data is retrieved. By default the table will
not be
+ * flushed before retrieving summary data.
+ *
+ * @return this
+ */
+ SummaryRetriever flush(boolean shouldFlush);
+
+ /**
+ * Allows optionally setting start row before retrieving data. The start
row is not inclusive.
+ */
+ SummaryRetriever startRow(Text startRow);
+
+ /**
+ * Allows optionally setting start row before retrieving data. The start
row is not inclusive.
+ */
+ SummaryRetriever startRow(CharSequence startRow);
+
+ /**
+ * Allows optionally setting end row before retrieving data. The end row
is inclusive.
+ */
+ SummaryRetriever endRow(Text endRow);
+
+ /**
+ * Allows optionally setting end row before retrieving data. The end row
is inclusive.
+ */
+ SummaryRetriever endRow(CharSequence endRow);
+
+ /**
+ * Gets summaries generated with a configuration that matches the given
regex. For a given SummarizationConfiguration it is matched in exactly the
following
+ * way. This allows the regex to match on classname and options.
--- End diff --
It's not obvious to me what this method is doing under the hood and I don't
think the code snippet helps.
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