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HBASE-27649 WALPlayer does not properly dedupe overridden cell versio…
…ns (#5058) Signed-off-by: Duo Zhang <[email protected]>
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...-mapreduce/src/main/java/org/apache/hadoop/hbase/mapreduce/ExtendedCellSerialization.java
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| /* | ||
| * 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.hadoop.hbase.mapreduce; | ||
|
|
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| import java.io.DataInputStream; | ||
| import java.io.DataOutputStream; | ||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.io.OutputStream; | ||
| import org.apache.hadoop.hbase.ExtendedCell; | ||
| import org.apache.hadoop.hbase.KeyValue; | ||
| import org.apache.hadoop.hbase.KeyValueUtil; | ||
| import org.apache.hadoop.hbase.PrivateCellUtil; | ||
| import org.apache.hadoop.hbase.util.Bytes; | ||
| import org.apache.hadoop.io.serializer.Deserializer; | ||
| import org.apache.hadoop.io.serializer.Serialization; | ||
| import org.apache.hadoop.io.serializer.Serializer; | ||
| import org.apache.yetus.audience.InterfaceAudience; | ||
|
|
||
| /** | ||
| * Similar to CellSerialization, but includes the sequenceId from an ExtendedCell. This is necessary | ||
| * so that CellSortReducer can sort by sequenceId, if applicable. Note that these two serializations | ||
| * are not compatible -- data serialized by CellSerialization cannot be deserialized with | ||
| * ExtendedCellSerialization and vice versa. This is ok for {@link HFileOutputFormat2} because the | ||
| * serialization is not actually used for the actual written HFiles, just intermediate data (between | ||
| * mapper and reducer of a single job). | ||
| */ | ||
| @InterfaceAudience.Private | ||
| public class ExtendedCellSerialization implements Serialization<ExtendedCell> { | ||
| @Override | ||
| public boolean accept(Class<?> c) { | ||
| return ExtendedCell.class.isAssignableFrom(c); | ||
| } | ||
|
|
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| @Override | ||
| public ExtendedCellDeserializer getDeserializer(Class<ExtendedCell> t) { | ||
| return new ExtendedCellDeserializer(); | ||
| } | ||
|
|
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| @Override | ||
| public ExtendedCellSerializer getSerializer(Class<ExtendedCell> c) { | ||
| return new ExtendedCellSerializer(); | ||
| } | ||
|
|
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| public static class ExtendedCellDeserializer implements Deserializer<ExtendedCell> { | ||
| private DataInputStream dis; | ||
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| @Override | ||
| public void close() throws IOException { | ||
| this.dis.close(); | ||
| } | ||
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| @Override | ||
| public KeyValue deserialize(ExtendedCell ignore) throws IOException { | ||
| KeyValue kv = KeyValueUtil.create(this.dis); | ||
| PrivateCellUtil.setSequenceId(kv, this.dis.readLong()); | ||
| return kv; | ||
| } | ||
|
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| @Override | ||
| public void open(InputStream is) throws IOException { | ||
| this.dis = new DataInputStream(is); | ||
| } | ||
| } | ||
|
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| public static class ExtendedCellSerializer implements Serializer<ExtendedCell> { | ||
| private DataOutputStream dos; | ||
|
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| @Override | ||
| public void close() throws IOException { | ||
| this.dos.close(); | ||
| } | ||
|
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| @Override | ||
| public void open(OutputStream os) throws IOException { | ||
| this.dos = new DataOutputStream(os); | ||
| } | ||
|
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| @Override | ||
| public void serialize(ExtendedCell kv) throws IOException { | ||
| dos.writeInt(PrivateCellUtil.estimatedSerializedSizeOf(kv) - Bytes.SIZEOF_INT); | ||
| PrivateCellUtil.writeCell(kv, dos, true); | ||
| dos.writeLong(kv.getSequenceId()); | ||
| } | ||
| } | ||
| } |
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