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jenniferdai pushed a commit to branch orc
in repository https://gitbox.apache.org/repos/asf/incubator-pinot.git
commit ffed46d2a333dd64722565dc98c16b4965b5a96e
Author: Jennifer Dai <j...@linkedin.com>
AuthorDate: Mon Mar 18 15:03:41 2019 -0700
ORC Reader
---
.../java/org/apache/pinot/common/data/Schema.java | 1 +
pinot-orc/pom.xml | 58 ++++++++++
.../pinot/orc/data/readers/ORCRecordReader.java | 126 +++++++++++++++++++++
pom.xml | 11 ++
4 files changed, 196 insertions(+)
diff --git
a/pinot-common/src/main/java/org/apache/pinot/common/data/Schema.java
b/pinot-common/src/main/java/org/apache/pinot/common/data/Schema.java
index f06b14c..087c582 100644
--- a/pinot-common/src/main/java/org/apache/pinot/common/data/Schema.java
+++ b/pinot-common/src/main/java/org/apache/pinot/common/data/Schema.java
@@ -138,6 +138,7 @@ public final class Schema {
return _metricFieldSpecs;
}
+
/**
* Required by JSON deserializer. DO NOT USE. DO NOT REMOVE.
* Adding @Deprecated to prevent usage
diff --git a/pinot-orc/pom.xml b/pinot-orc/pom.xml
new file mode 100644
index 0000000..10c0a18
--- /dev/null
+++ b/pinot-orc/pom.xml
@@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ 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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0";
+ xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
+ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/xsd/maven-4.0.0.xsd";>
+ <parent>
+ <artifactId>pinot</artifactId>
+ <groupId>org.apache.pinot</groupId>
+ <version>0.1.0-SNAPSHOT</version>
+ </parent>
+ <modelVersion>4.0.0</modelVersion>
+
+ <artifactId>pinot-orc</artifactId>
+ <name>Pinot ORC</name>
+ <url>https://pinot.apache.org/</url>
+ <properties>
+ <pinot.root>${basedir}/..</pinot.root>
+ </properties>
+ <build>
+ <plugins>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-enforcer-plugin</artifactId>
+ </plugin>
+ </plugins>
+ </build>
+ <dependencies>
+ <dependency>
+ <groupId>org.apache.orc</groupId>
+ <artifactId>orc-core</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.orc</groupId>
+ <artifactId>orc-mapreduce</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.pinot</groupId>
+ <artifactId>pinot-core</artifactId>
+ </dependency>
+ </dependencies>
+</project>
\ No newline at end of file
diff --git
a/pinot-orc/src/main/java/org/apache/pinot/orc/data/readers/ORCRecordReader.java
b/pinot-orc/src/main/java/org/apache/pinot/orc/data/readers/ORCRecordReader.java
new file mode 100644
index 0000000..68660fd
--- /dev/null
+++
b/pinot-orc/src/main/java/org/apache/pinot/orc/data/readers/ORCRecordReader.java
@@ -0,0 +1,126 @@
+package org.apache.pinot.orc.data.readers;
+
+/**
+ * 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.
+ */
+
+import java.io.IOException;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch;
+import org.apache.orc.OrcFile;
+import org.apache.orc.Reader;
+import org.apache.orc.TypeDescription;
+import org.apache.pinot.common.data.Schema;
+import org.apache.pinot.core.data.GenericRow;
+import org.apache.pinot.core.data.readers.RecordReader;
+import org.apache.pinot.core.indexsegment.generator.SegmentGeneratorConfig;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+public class ORCRecordReader implements RecordReader {
+
+ private Schema _pinotSchema;
+ private TypeDescription _orcSchema;
+ Reader _reader;
+ org.apache.orc.RecordReader _recordReader;
+ VectorizedRowBatch _reusableVectorizedRowBatch = new VectorizedRowBatch(1);
+
+ private static final Logger LOGGER =
LoggerFactory.getLogger(ORCRecordReader.class);
+
+ @Override
+ public void init(SegmentGeneratorConfig segmentGeneratorConfig) {
+ Configuration conf = new Configuration();
+ LOGGER.info("Creating segment for {}",
segmentGeneratorConfig.getInputFilePath());
+ try {
+ _reader = OrcFile.createReader(new
Path(segmentGeneratorConfig.getInputFilePath()), OrcFile.readerOptions(conf));
+ _orcSchema = _reader.getSchema();
+ LOGGER.info("ORC schema is {}", _orcSchema.toJson());
+
+ _pinotSchema = segmentGeneratorConfig.getSchema();
+ if (_pinotSchema == null) {
+ throw new IllegalArgumentException("ORCRecordReader requires schema");
+ }
+ _recordReader = _reader.rows(_reader.options().schema(_orcSchema));
+ } catch (Exception e) {
+ LOGGER.error("Caught exception initializing record reader at path {}",
segmentGeneratorConfig.getInputFilePath());
+ throw new RuntimeException(e);
+ }
+ }
+
+ @Override
+ public boolean hasNext() {
+ try {
+ return _recordReader.getProgress() != 1;
+ } catch (IOException e) {
+ LOGGER.error("Could not get next record");
+ throw new RuntimeException(e);
+ }
+ }
+
+ @Override
+ public GenericRow next()
+ throws IOException {
+ return next(new GenericRow());
+ }
+
+ @Override
+ public GenericRow next(GenericRow reuse)
+ throws IOException {
+ _reusableVectorizedRowBatch = _orcSchema.createRowBatch(1);
+ _recordReader.nextBatch(_reusableVectorizedRowBatch);
+ fillGenericRow(reuse, _reusableVectorizedRowBatch);
+ return reuse;
+ }
+
+ private void fillGenericRow(GenericRow genericRow, VectorizedRowBatch
rowBatch) throws IOException {
+ // Read the row data
+ TypeDescription schema = _reader.getSchema();
+ // Create a row batch with max size 1
+
+ if (schema.getCategory().equals(TypeDescription.Category.STRUCT)) {
+ for (int i = 0; i < schema.getChildren().size(); i++) {
+ // Get current column in schema
+ TypeDescription currColumn = schema.getChildren().get(i);
+ String currColumnName = currColumn.getFieldNames().get(0);
+ int currColRowIndex = currColumn.getId();
+ genericRow.putField(currColumnName, rowBatch.cols[currColRowIndex]);
+ }
+ } else {
+ throw new IllegalArgumentException("Not a valid schema");
+ }
+ }
+
+ @Override
+ public void rewind()
+ throws IOException {
+ _recordReader = _reader.rows();
+ }
+
+ @Override
+ public org.apache.pinot.common.data.Schema getSchema() {
+ return _pinotSchema;
+ }
+
+ @Override
+ public void close()
+ throws IOException {
+ _recordReader.close();
+ }
+}
diff --git a/pom.xml b/pom.xml
index d36887d..a01c80f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -54,6 +54,7 @@
<module>pinot-filesystem</module>
<module>pinot-hadoop-filesystem</module>
<module>pinot-azure-filesystem</module>
+ <module>pinot-orc</module>
</modules>
<licenses>
@@ -592,6 +593,16 @@
</exclusions>
</dependency>
<dependency>
+ <groupId>org.apache.orc</groupId>
+ <artifactId>orc-core</artifactId>
+ <version>1.5.2</version>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.orc</groupId>
+ <artifactId>orc-mapreduce</artifactId>
+ <version>1.5.2</version>
+ </dependency>
+ <dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>1.9.13</version>
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