sqoop从DB2迁移数据到HDFS

标签：xml文件   contex   tab   vax   key   sim   tst   temp   lstat   

Sqoop import job failed to read data from DB2 database which has UTF8 encoding. Essentially, even the data cannot be read at DB2 with select queries as there are some characters which are not in UTF8.

Sqoop job will throw an error similar to below:

Error: java.io.IOException: SQLException in nextKeyValue
        at org.apache.sqoop.mapreduce.db.DBRecordReader.nextKeyValue(DBRecordReader.java:265)
..
..
Caused by: com.ibm.db2.jcc.am.SqlException: [jcc][t4][1065][12306][4.19.26] Caught java.io.CharConversionException.  See attached Throwable for details. ERRORCODE=-4220, SQLSTATE=null
        at com.ibm.db2.jcc.am.kd.a(Unknown Source)
        at com.ibm.db2.jcc.am.kd.a(Unknown Source)
..
..
Caused by: java.nio.charset.MalformedInputException: Input length = 527
        at com.ibm.db2.jcc.am.s.a(Unknown Source)
        ... 22 more
Caused by: sun.io.MalformedInputException
        at sun.io.ByteToCharUTF8.convert(ByteToCharUTF8.java:105)
        ... 23 more

解决办法：

需要在yarn的mapred-site.xml文件中添加如下配置：

<property>
<name>mapreduce.map.java.opts</name>
<value>-Xmx1024m -Ddb2.jcc.charsetDecoderEncoder=3</value>
</property>

http://www-01.ibm.com/support/docview.wss?uid=swg21684365

sqoop从DB2迁移数据到HDFS

标签：xml文件   contex   tab   vax   key   sim   tst   temp   lstat   

原文地址：https://www.cnblogs.com/songyuejie/p/9643911.html