Repository: giraph Updated Branches: refs/heads/trunk 535a333b7 -> 4a133f576
http://git-wip-us.apache.org/repos/asf/giraph/blob/4a133f57/giraph-hive/src/main/java/org/apache/giraph/hive/input/mapping/examples/LongByteHiveToMapping.java ---------------------------------------------------------------------- diff --git a/giraph-hive/src/main/java/org/apache/giraph/hive/input/mapping/examples/LongByteHiveToMapping.java b/giraph-hive/src/main/java/org/apache/giraph/hive/input/mapping/examples/LongByteHiveToMapping.java new file mode 100644 index 0000000..fc9f9d3 --- /dev/null +++ b/giraph-hive/src/main/java/org/apache/giraph/hive/input/mapping/examples/LongByteHiveToMapping.java @@ -0,0 +1,56 @@ +/* + * 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.giraph.hive.input.mapping.examples; + +import com.facebook.hiveio.common.HiveType; +import com.facebook.hiveio.input.HiveInputDescription; +import com.facebook.hiveio.input.parser.Records; +import com.facebook.hiveio.record.HiveReadableRecord; +import com.facebook.hiveio.schema.HiveTableSchema; +import org.apache.giraph.hive.input.mapping.SimpleHiveToMapping; +import org.apache.hadoop.io.ByteWritable; +import org.apache.hadoop.io.LongWritable; + +/** + * Long VertexId, Byte MappingTarget implementation of HiveToMapping + */ +public class LongByteHiveToMapping extends SimpleHiveToMapping<LongWritable, + ByteWritable> { + + @Override + public void checkInput(HiveInputDescription inputDesc, + HiveTableSchema schema) { + Records.verifyType(0, HiveType.LONG, schema); + Records.verifyType(1, HiveType.BYTE, schema); + } + + @Override + public LongWritable getVertexId(HiveReadableRecord record) { + LongWritable reusableId = getReusableVertexId(); + reusableId.set(record.getLong(0)); + return reusableId; + } + + @Override + public ByteWritable getMappingTarget(HiveReadableRecord record) { + ByteWritable reusableTarget = getReusableMappingTarget(); + reusableTarget.set(record.getByte(1)); + return reusableTarget; + } +} http://git-wip-us.apache.org/repos/asf/giraph/blob/4a133f57/giraph-hive/src/main/java/org/apache/giraph/hive/input/mapping/examples/LongInt2ByteHiveToMapping.java ---------------------------------------------------------------------- diff --git a/giraph-hive/src/main/java/org/apache/giraph/hive/input/mapping/examples/LongInt2ByteHiveToMapping.java b/giraph-hive/src/main/java/org/apache/giraph/hive/input/mapping/examples/LongInt2ByteHiveToMapping.java new file mode 100644 index 0000000..617bc4f --- /dev/null +++ b/giraph-hive/src/main/java/org/apache/giraph/hive/input/mapping/examples/LongInt2ByteHiveToMapping.java @@ -0,0 +1,81 @@ +/* + * 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.giraph.hive.input.mapping.examples; + +import com.facebook.hiveio.common.HiveType; +import com.facebook.hiveio.input.HiveInputDescription; +import com.facebook.hiveio.input.parser.Records; +import com.facebook.hiveio.record.HiveReadableRecord; +import com.facebook.hiveio.schema.HiveTableSchema; +import org.apache.giraph.hive.input.mapping.SimpleHiveToMapping; +import org.apache.hadoop.io.ByteWritable; +import org.apache.hadoop.io.LongWritable; + +import java.util.Iterator; + +/** + * Long VertexId, Int Mapping target -> Byte MappingTarget + * implementation of HiveToMapping + * + * The input table has long id, int bucket value + * we need to translate this to long id & byte bucket value + */ +public class LongInt2ByteHiveToMapping extends SimpleHiveToMapping<LongWritable, + ByteWritable> { + + /** Number of workers for the job */ + private int numWorkers = 0; + + @Override + public void initializeRecords(Iterator<HiveReadableRecord> records) { + super.initializeRecords(records); + numWorkers = getConf().getMaxWorkers(); + if (numWorkers <= 0 || numWorkers >= 255) { + throw new IllegalStateException("#workers should be > 0 & < 255"); + } + } + + @Override + public void checkInput(HiveInputDescription inputDesc, + HiveTableSchema schema) { + Records.verifyType(0, HiveType.LONG, schema); + Records.verifyType(1, HiveType.INT, schema); + } + + @Override + public LongWritable getVertexId(HiveReadableRecord record) { + long id = record.getLong(0); + LongWritable reusableId = getReusableVertexId(); + reusableId.set(id); + return reusableId; + } + + @Override + public ByteWritable getMappingTarget(HiveReadableRecord record) { + int target = record.getInt(1); + ByteWritable reusableTarget = getReusableMappingTarget(); + int bVal = target % numWorkers; + if ((bVal >>> 8) != 0) { + throw new IllegalStateException("target % numWorkers overflows " + + "byte range"); + } + reusableTarget.set((byte) bVal); + return reusableTarget; + } +} http://git-wip-us.apache.org/repos/asf/giraph/blob/4a133f57/giraph-hive/src/main/java/org/apache/giraph/hive/input/mapping/examples/package-info.java ---------------------------------------------------------------------- diff --git a/giraph-hive/src/main/java/org/apache/giraph/hive/input/mapping/examples/package-info.java b/giraph-hive/src/main/java/org/apache/giraph/hive/input/mapping/examples/package-info.java new file mode 100644 index 0000000..41afed6 --- /dev/null +++ b/giraph-hive/src/main/java/org/apache/giraph/hive/input/mapping/examples/package-info.java @@ -0,0 +1,22 @@ +/* + * 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. + */ + +/** + * Sample implementations of HiveToMapping interface + */ +package org.apache.giraph.hive.input.mapping.examples; http://git-wip-us.apache.org/repos/asf/giraph/blob/4a133f57/giraph-hive/src/main/java/org/apache/giraph/hive/input/mapping/package-info.java ---------------------------------------------------------------------- diff --git a/giraph-hive/src/main/java/org/apache/giraph/hive/input/mapping/package-info.java b/giraph-hive/src/main/java/org/apache/giraph/hive/input/mapping/package-info.java new file mode 100644 index 0000000..c7ad2a3 --- /dev/null +++ b/giraph-hive/src/main/java/org/apache/giraph/hive/input/mapping/package-info.java @@ -0,0 +1,22 @@ +/* + * 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. + */ + +/** + * Hive Mapping input related classes + */ +package org.apache.giraph.hive.input.mapping;
