Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/477#discussion_r68072328
--- Diff:
nifi-nar-bundles/nifi-hive-bundle/nifi-hive-processors/src/main/java/org/apache/nifi/processors/hive/ConvertAvroToORC.java
---
@@ -0,0 +1,303 @@
+/*
+ * 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.nifi.processors.hive;
+
+import org.apache.avro.Schema;
+import org.apache.avro.file.DataFileStream;
+import org.apache.avro.generic.GenericDatumReader;
+import org.apache.avro.generic.GenericRecord;
+import org.apache.commons.lang3.mutable.MutableInt;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.SideEffectFree;
+import org.apache.nifi.annotation.behavior.SupportsBatching;
+import org.apache.nifi.annotation.behavior.WritesAttribute;
+import org.apache.nifi.annotation.behavior.WritesAttributes;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.flowfile.attributes.CoreAttributes;
+import org.apache.nifi.processor.AbstractProcessor;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.io.StreamCallback;
+import org.apache.nifi.processor.util.StandardValidators;
+import org.apache.nifi.util.hive.HiveJdbcCommon;
+import org.apache.nifi.util.orc.OrcFlowFileWriter;
+import org.apache.nifi.util.orc.OrcUtils;
+import org.apache.orc.CompressionKind;
+import org.apache.orc.OrcFile;
+import org.apache.orc.TypeDescription;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.atomic.AtomicReference;
+
+/**
+ * The ConvertAvroToORC processor takes an Avro-formatted flow file as
input and converts it into ORC format.
+ */
+@SideEffectFree
+@SupportsBatching
+@Tags({"avro", "orc", "hive", "convert"})
+@InputRequirement(InputRequirement.Requirement.INPUT_REQUIRED)
+@CapabilityDescription("Converts an Avro record into ORC file format. This
processor provides a direct mapping of an Avro record to an ORC record, such "
+ + "that the resulting ORC file will have the same hierarchical
structure as the Avro document. If an incoming FlowFile contains a stream of "
+ + "multiple Avro records, the resultant FlowFile will contain a
ORC file containing all of the Avro records. If an incoming FlowFile does "
+ + "not contain any records, an empty ORC file is the output.")
+@WritesAttributes({
+ @WritesAttribute(attribute = "mime.type", description = "Sets the
mime type to application/octet-stream"),
+ @WritesAttribute(attribute = "filename", description = "Sets the
filename to the existing filename with the extension replaced by / added to by
.orc"),
+ @WritesAttribute(attribute = "record.count", description = "Sets
the number of records in the ORC file."),
+ @WritesAttribute(attribute = "hive.ddl", description = "Creates a
partial Hive DDL statement for creating a table in Hive from this ORC file. "
+ + "This can be used in ReplaceText for setting the content
to the DDL. To make it valid DDL, add \"LOCATION
'<path_to_orc_file_in_hdfs>'\", where "
+ + "the path is the directory that contains this ORC file
on HDFS. For example, ConvertAvroToORC can send flow files to a PutHDFS
processor to send the file to "
+ + "HDFS, then to a ReplaceText to set the content to this
DDL (plus the LOCATION clause as described), then to PutHiveQL processor to
create the table "
+ + "if it doesn't exist.")
+})
+public class ConvertAvroToORC extends AbstractProcessor {
+
+ // Attributes
+ public static final String ORC_MIME_TYPE = "application/octet-stream";
+ public static final String HIVE_DDL_ATTRIBUTE = "hive.ddl";
+ public static final String RECORD_COUNT_ATTRIBUTE = "record.count";
+
+
+ // Properties
+ public static final PropertyDescriptor ORC_CONFIGURATION_RESOURCES =
new PropertyDescriptor.Builder()
+ .name("orc-config-resources")
+ .displayName("ORC Configuration Resources")
+ .description("A file or comma separated list of files which
contains the ORC configuration (hive-site.xml, e.g.). Without this, Hadoop "
+ + "will search the classpath for a 'hive-site.xml'
file or will revert to a default configuration. Please see the ORC
documentation for more details.")
+
.required(false).addValidator(HiveJdbcCommon.createMultipleFilesExistValidator()).build();
+
+ public static final PropertyDescriptor STRIPE_SIZE = new
PropertyDescriptor.Builder()
+ .name("orc-stripe-size")
+ .displayName("Stripe Size")
+ .description("The size of the memory buffer (in bytes) for
writing stripes to an ORC file")
+ .required(true)
+ .addValidator(StandardValidators.POSITIVE_INTEGER_VALIDATOR)
+ .defaultValue("100000")
+ .build();
+
+ public static final PropertyDescriptor BUFFER_SIZE = new
PropertyDescriptor.Builder()
+ .name("orc-buffer-size")
+ .displayName("Buffer Size")
+ .description("The maximum size of the memory buffers (in
bytes) used for compressing and storing a stripe in memory. This is a hint to
the ORC writer, "
+ + "which may choose to use a smaller buffer size based
on stripe size and number of columns for efficient stripe writing and memory
utilization.")
+ .required(true)
+ .addValidator(StandardValidators.POSITIVE_INTEGER_VALIDATOR)
+ .defaultValue("10000")
+ .build();
+
+ public static final PropertyDescriptor COMPRESSION_TYPE = new
PropertyDescriptor.Builder()
+ .name("orc-compression-type")
+ .displayName("Compression Type")
+ .required(true)
+ .allowableValues("NONE", "ZLIB", "SNAPPY", "LZO")
+ .defaultValue("NONE")
+ .build();
+
+ public static final PropertyDescriptor HIVE_TABLE_NAME = new
PropertyDescriptor.Builder()
--- End diff --
This property should probably support Expression Language, nO?
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
