[jira] [Commented] (SQOOP-991) Not able to export blob datatype from HDFS to MySQL

["Chiwan Park (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SQOOP-991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14203974#comment-14203974 ] 

Chiwan Park commented on SQOOP-991:
-----------------------------------

I have a same problem with following situation and want to submit patch solving this problem.

MySQL version: 5.6.21
Hadoop version: Apache Hadoop 2.5.1
Sqoop branch: trunk (Sqoop1)

Database table:
{code}
CREATE TABLE sqoop_test2
(
    ID INT PRIMARY KEY NOT NULL AUTO_INCREMENT,
    DATA LONGBLOB NOT NULL
);
{code}

Export command: sqoop export --connect jdbc:mysql://localhost/test --table sqoop_test2 --export-dir /sqoop-test --username root

Exception got:
{code}
Caused by: java.lang.CloneNotSupportedException: com.cloudera.sqoop.lib.BlobRef
	at java.lang.Object.clone(Native Method)
	at org.apache.sqoop.lib.LobRef.clone(LobRef.java:110)
	at sqoop_test2.clone(sqoop_test2.java:270)
	at org.apache.sqoop.mapreduce.AsyncSqlRecordWriter.write(AsyncSqlRecordWriter.java:213)
	... 15 more
{code}

> Not able to export blob datatype from HDFS to MySQL
> ---------------------------------------------------
>
>                 Key: SQOOP-991
>                 URL: https://issues.apache.org/jira/browse/SQOOP-991
>             Project: Sqoop
>          Issue Type: Bug
>            Reporter: prashanthi
>
> Inserted a .txt/pdf/jpg/jpeg file to blob column and trying to import it to HDFS. and it is fine. while exporting the same to MySql it is giving
>                   java.io.IOException: Could not buffer record Caused by: java.lang.CloneNotSupportedException: com.cloudera.sqoop.lib.BlobRef
> Ifi import the file as sequence file to HDFS then also import is fine but when exporting same to MySQL it says that  java.lang.RuntimeException: java.io.IOException: WritableName can't load class: pdffile
> Please help me on resolving the issue.
> Commands which i am using to import and export are
> sqoop import --connect jdbc:mysql://localhost/test --table Image --fields-terminated-by '\t' --username root --password naveen@123 -m 1
> sqoop export --connect jdbc:mysql://localhost/test --table Image_new --export-dir /user/naveen/Image --fields-terminated-by '\t' --username root --password naveen@123 -m 1



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