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https://issues.apache.org/jira/browse/JENA-1550?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16482853#comment-16482853
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ASF GitHub Bot commented on JENA-1550:
--------------------------------------
Github user afs commented on a diff in the pull request:
https://github.com/apache/jena/pull/424#discussion_r189671869
--- Diff:
jena-db/jena-tdb2/src/main/java/org/apache/jena/tdb2/loader/parallel/LoaderParallel.java
---
@@ -0,0 +1,155 @@
+/*
+ * 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.jena.tdb2.loader.parallel;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.Consumer;
+
+import org.apache.jena.atlas.lib.tuple.Tuple;
+import org.apache.jena.graph.Node;
+import org.apache.jena.riot.system.StreamRDF;
+import org.apache.jena.sparql.core.DatasetGraph;
+import org.apache.jena.tdb2.loader.DataLoader;
+import org.apache.jena.tdb2.loader.base.LoaderBase;
+import org.apache.jena.tdb2.loader.base.LoaderOps;
+import org.apache.jena.tdb2.loader.base.MonitorOutput;
+import org.apache.jena.tdb2.store.DatasetGraphTDB;
+import org.apache.jena.tdb2.store.DatasetPrefixesTDB;
+import org.apache.jena.tdb2.store.NodeId;
+import org.apache.jena.tdb2.sys.TDBInternal;
+
+/**
+ * The parallel Loader.
+ * <p>
+ * The process is:
+ * <blockquote>
+ * {@code DataBatcher -> DataToTuples -> Indexer}
+ * <blockquote>
+ * {@link DataBatcher} produces {@link DataBlock}s - grouping of triples
and quads. It uses
--- End diff --
Done.
Also some adding of "public" to what are internal classes to allow further
experimentation (as time permits). Loading at larger scale, and to disk,
benefits from phasing the index builds (c.f. tdbloader1) but it needs
experimentation.
> Bulk loader for TDB2.
> ---------------------
>
> Key: JENA-1550
> URL: https://issues.apache.org/jira/browse/JENA-1550
> Project: Apache Jena
> Issue Type: Improvement
> Components: TDB2
> Affects Versions: Jena 3.7.0
> Reporter: Andy Seaborne
> Assignee: Andy Seaborne
> Priority: Major
>
> Provide a bulk loader for TDB2.
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