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<p>To use this Apache Druid extension, <a href="/docs/latest/development/extensions.html#loading-extensions">include</a> <code>druid-thrift-extensions</code> in the extensions load list.</p>
<p>This extension enables Druid to ingest thrift compact data online (<code>ByteBuffer</code>) and offline (SequenceFile of type <code>&lt;Writable, BytesWritable&gt;</code> or LzoThriftBlock File).</p>
<p>You may want to use another version of thrift, change the dependency in pom and compile yourself.</p>
<h2><a class="anchor" aria-hidden="true" id="lzo-support"></a><a href="#lzo-support" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>LZO Support</h2>
<p>If you plan to read LZO-compressed Thrift files, you will need to download version 0.4.19 of the <a href="https://mvnrepository.com/artifact/com.hadoop.gplcompression/hadoop-lzo/0.4.19">hadoop-lzo JAR</a> and place it in your <code>extensions/druid-thrift-extensions</code> directory.</p>
<h2><a class="anchor" aria-hidden="true" id="thrift-parser"></a><a href="#thrift-parser" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Thrift Parser</h2>
<table>
<thead>
<tr><th>Field</th><th>Type</th><th>Description</th><th>Required</th></tr>
</thead>
<tbody>
<tr><td>type</td><td>String</td><td>This should say <code>thrift</code></td><td>yes</td></tr>
<tr><td>parseSpec</td><td>JSON Object</td><td>Specifies the timestamp and dimensions of the data. Should be a JSON parseSpec.</td><td>yes</td></tr>
<tr><td>thriftJar</td><td>String</td><td>path of thrift jar, if not provided, it will try to find the thrift class in classpath. Thrift jar in batch ingestion should be uploaded to HDFS first and configure <code>jobProperties</code> with <code>&quot;tmpjars&quot;:&quot;/path/to/your/thrift.jar&quot;</code></td><td>no</td></tr>
<tr><td>thriftClass</td><td>String</td><td>classname of thrift</td><td>yes</td></tr>
</tbody>
</table>
<ul>
<li>Batch Ingestion example - <code>inputFormat</code> and <code>tmpjars</code> should be set.</li>
</ul>
<p>This is for batch ingestion using the HadoopDruidIndexer. The inputFormat of inputSpec in ioConfig could be one of <code>&quot;org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat&quot;</code> and <code>com.twitter.elephantbird.mapreduce.input.LzoThriftBlockInputFormat</code>. Be careful, when <code>LzoThriftBlockInputFormat</code> is used, thrift class must be provided twice.</p>
<pre><code class="hljs css language-json">{
  "type": "index_hadoop",
  "spec": {
    "dataSchema": {
      "dataSource": "book",
      "parser": {
        "type": "thrift",
        "jarPath": "book.jar",
        "thriftClass": "org.apache.druid.data.input.thrift.Book",
        "protocol": "compact",
        "parseSpec": {
          "format": "json",
          ...
        }
      },
      "metricsSpec": [],
      "granularitySpec": {}
    },
    "ioConfig": {
      "type": "hadoop",
      "inputSpec": {
        "type": "static",
        "inputFormat": "org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat",
        // "inputFormat": "com.twitter.elephantbird.mapreduce.input.LzoThriftBlockInputFormat",
        "paths": "/user/to/some/book.seq"
      }
    },
    "tuningConfig": {
      "type": "hadoop",
      "jobProperties": {
        "tmpjars":"/user/h_user_profile/du00/druid/test/book.jar",
        // "elephantbird.class.for.MultiInputFormat" : "${YOUR_THRIFT_CLASS_NAME}"
      }
    }
  }
}
</code></pre>
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