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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-3963) Read raw key value bytes from sequence files
Date Thu, 29 Oct 2015 23:00:29 GMT

    [ https://issues.apache.org/jira/browse/DRILL-3963?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14981516#comment-14981516
] 

ASF GitHub Bot commented on DRILL-3963:
---------------------------------------

Github user sudheeshkatkam commented on a diff in the pull request:

    https://github.com/apache/drill/pull/214#discussion_r43455328
  
    --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/sequencefile/SequenceFileFormatPlugin.java
---
    @@ -0,0 +1,92 @@
    +/**
    + * 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.drill.exec.store.easy.sequencefile;
    +
    +import org.apache.drill.common.exceptions.ExecutionSetupException;
    +import org.apache.drill.common.expression.SchemaPath;
    +import org.apache.drill.common.logical.StoragePluginConfig;
    +import org.apache.drill.exec.ops.FragmentContext;
    +import org.apache.drill.exec.physical.base.AbstractGroupScan;
    +import org.apache.drill.exec.proto.UserBitShared;
    +import org.apache.drill.exec.server.DrillbitContext;
    +import org.apache.drill.exec.store.RecordReader;
    +import org.apache.drill.exec.store.RecordWriter;
    +import org.apache.drill.exec.store.dfs.DrillFileSystem;
    +import org.apache.drill.exec.store.dfs.FileSelection;
    +import org.apache.drill.exec.store.dfs.easy.EasyFormatPlugin;
    +import org.apache.drill.exec.store.dfs.easy.EasyGroupScan;
    +import org.apache.drill.exec.store.dfs.easy.EasyWriter;
    +import org.apache.drill.exec.store.dfs.easy.FileWork;
    +import org.apache.hadoop.conf.Configuration;
    +import org.apache.hadoop.fs.Path;
    +import org.apache.hadoop.mapred.FileSplit;
    +
    +import java.io.IOException;
    +import java.util.List;
    +
    +public class SequenceFileFormatPlugin extends EasyFormatPlugin<SequenceFileFormatConfig>
{
    +  public SequenceFileFormatPlugin(String name, DrillbitContext context, Configuration
fsConf,
    +                                  StoragePluginConfig storageConfig) {
    +    this(name, context, fsConf, storageConfig, new SequenceFileFormatConfig());
    +  }
    +
    +  public SequenceFileFormatPlugin(String name, DrillbitContext context, Configuration
fsConf,
    +                                  StoragePluginConfig storageConfig, SequenceFileFormatConfig
formatConfig) {
    +    super(name, context, fsConf, storageConfig, formatConfig,
    +      true, false, /* splittable = */ true, /* compressible = */ true,
    +      formatConfig.getExtensions(), "sequencefile");
    +  }
    +
    +  @Override
    +  public boolean supportsPushDown() {
    +    return true;
    +  }
    +
    --- End diff --
    
    extra line?


> Read raw key value bytes from sequence files
> --------------------------------------------
>
>                 Key: DRILL-3963
>                 URL: https://issues.apache.org/jira/browse/DRILL-3963
>             Project: Apache Drill
>          Issue Type: New Feature
>            Reporter: amit hadke
>            Assignee: amit hadke
>
> Sequence files store list of key-value pairs. Keys/values are of type hadoop writable.
> Provide a format plugin that reads raw bytes out of sequence files which can be further
deserialized by a udf(from hadoop writable -> drill type)



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