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Sqoop配置安装

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Jun 07, 2016 pm 05:03 PM

hadoop

Sqoop是一个用来将Hadoop和关系型数据库中的数据相互转移的工具，可以将一个关系型数据库（例如： MySQL ,Oracle ,Postgres等）

Sqoop是一个用来将Hadoop和关系型数据库中的数据相互转移的工具，可以将一个关系型数据库（例如： MySQL ,Oracle ,Postgres等）中的数据导入到Hadoop的HDFS中，也可以将HDFS的数据导入到关系型数据库中。

Sqoop的User Guide地址：

1:tar zxvf sqoop-1.1.0.tar.gz

2:修改配置文件 /home/hadoopuser/sqoop-1.1.0/conf/sqoop-site.xml

一般只需要修改如下几个项：

sqoop.metastore.client.enable.autoconnect
sqoop.metastore.client.autoconnect.url
sqoop.metastore.client.autoconnect.username
sqoop.metastore.client.autoconnect.password
sqoop.metastore.server.location
sqoop.metastore.server.port

3：

bin/sqoop help

bin/sqoop help import

[hadoopuser@master sqoop-1.1.0]$ bin/sqoop import --connect jdbc:mysql://localhost/ppc --table data_ip --username kwps -P

Enter password:

11/02/18 10:51:58 ERROR sqoop.Sqoop: Got exception running Sqoop: java.lang.RuntimeException: Could not find appropriate Hadoop shim for 0.20.2

java.lang.RuntimeException: Could not find appropriate Hadoop shim for 0.20.2

at com.cloudera.sqoop.shims.ShimLoader.loadShim(ShimLoader.java:190)

at com.cloudera.sqoop.shims.ShimLoader.getHadoopShim(ShimLoader.java:109)

at com.cloudera.sqoop.tool.BaseSqoopTool.init(BaseSqoopTool.java:173)

at com.cloudera.sqoop.tool.ImportTool.init(ImportTool.java:81)

at com.cloudera.sqoop.tool.ImportTool.run(ImportTool.java:411)

at com.cloudera.sqoop.Sqoop.run(Sqoop.java:134)

at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)

at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)

at com.cloudera.sqoop.Sqoop.runSqoop(Sqoop.java:170)

at com.cloudera.sqoop.Sqoop.runTool(Sqoop.java:196)

at com.cloudera.sqoop.Sqoop.main(Sqoop.java:205)

解决办法:

默认情况下:

./hadoop-0.20.2/conf/hadoop-env.sh

# Extra Java runtime options. Empty by default.
# export HADOOP_OPTS=-server

需要更改成:

export HADOOP_OPTS="-Djava.net.preferIPv4Stack=true -Dsqoop.shim.jar.dir=/home/hadoopuser/sqoop-1.1.0/shims"

特别需要注意的是：

Sqoop目前在Apache 版本的Hadoop 0.20.2上是无法使用的。

目前只支持CDH 3 beta 2版本。所以如果想使用的话，得升级到 CDH 3 beta 2版本了。

“Sqoop does not run with Apache Hadoop 0.20.2. The only supported platform is CDH 3 beta 2. It requires features of MapReduce not available in the Apache 0.20.2 release of Hadoop. You should upgrade to CDH 3 beta 2 if you want to run Sqoop 1.0.0.”

这个问题已经被Cloudera 标记为 Major Bug，希望能尽快解决吧。

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