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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SQOOP-1390) Import data to HDFS as a set of Parquet files
Date Tue, 19 Aug 2014 17:57:19 GMT

    [ https://issues.apache.org/jira/browse/SQOOP-1390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14102546#comment-14102546
] 

Hudson commented on SQOOP-1390:
-------------------------------

SUCCESS: Integrated in Sqoop-ant-jdk-1.6-hadoop100 #884 (See [https://builds.apache.org/job/Sqoop-ant-jdk-1.6-hadoop100/884/])
SQOOP-1390: Import data to HDFS as a set of Parquet files (jarcec: https://git-wip-us.apache.org/repos/asf?p=sqoop.git&a=commit&h=2e1e09422cdeb1a0d6ead104599687fae6ac55f4)
* src/java/org/apache/sqoop/mapreduce/ParquetJob.java
* ivy.xml
* src/docs/user/hcatalog.txt
* src/java/org/apache/sqoop/tool/BaseSqoopTool.java
* src/java/org/apache/sqoop/mapreduce/ParquetImportMapper.java
* src/test/com/cloudera/sqoop/TestParquetImport.java
* src/java/org/apache/sqoop/orm/ClassWriter.java
* src/docs/man/sqoop-import-all-tables.txt
* src/java/org/apache/sqoop/mapreduce/DataDrivenImportJob.java
* src/java/org/apache/sqoop/util/AppendUtils.java
* src/docs/man/import-args.txt
* src/java/com/cloudera/sqoop/SqoopOptions.java
* src/licenses/LICENSE-BIN.txt
* src/java/org/apache/sqoop/lib/SqoopAvroRecord.java
* src/docs/user/import.txt
* ivy/libraries.properties
* src/java/org/apache/sqoop/tool/ImportTool.java
* src/java/org/apache/sqoop/avro/AvroUtil.java
* src/docs/user/help.txt
* src/docs/user/import-all-tables.txt
* src/java/org/apache/sqoop/mapreduce/AvroImportMapper.java


> Import data to HDFS as a set of Parquet files
> ---------------------------------------------
>
>                 Key: SQOOP-1390
>                 URL: https://issues.apache.org/jira/browse/SQOOP-1390
>             Project: Sqoop
>          Issue Type: Sub-task
>          Components: tools
>            Reporter: Qian Xu
>            Assignee: Qian Xu
>             Fix For: 1.4.6
>
>         Attachments: SQOOP-1390.patch
>
>
> Parquet files keep data in contiguous chunks by column, appending new records to a dataset
requires rewriting substantial portions of existing a file or buffering records to create
a new file. 
> The JIRA proposes to add the possibility to import an individual table from a RDBMS into
HDFS as a set of Parquet files. We will also provide a command-line interface with a new argument
{{--as-parquetfile}} 
> Example invocation: 
> {{sqoop import --connect JDBC_URI --table TABLE --as-parquetfile --target-dir /path/to/files}}
> The major items are listed as follows:
> * Implement ParquetImportMapper
> * Hook up the ParquetOutputFormat and ParquetImportMapper in the import job.
> * Be able to support import from scratch or in append mode
> Note that as Parquet is a columnar storage format, it doesn't make sense to write to
it directly from record-based tools. So we'd consider to use Kite SDK to simplify the handling
of Parquet specific things.



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