[
https://issues.apache.org/jira/browse/SQOOP-1533?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14383771#comment-14383771
]
Hari Sekhon edited comment on SQOOP-1533 at 3/27/15 12:43 PM:
--------------------------------------------------------------
I also have this problem when importing from SQL Server (we do a lot of SQL
Server imports, the only change was using HCatalog to try to write directly as
ORC). I'm not sure if this exactly the same issue as we're running Oracle Java
7.
was (Author: harisekhon):
I also have this problem when importing from SQL Server (we do a lot of SQL
Server imports, the only change was using HCatalog to try to write directly as
ORC).
> Java 8 : sqoop import --create-hcatalog-table for mysql causes
> NullPointerException when column name contains upper case char
> -----------------------------------------------------------------------------------------------------------------------------
>
> Key: SQOOP-1533
> URL: https://issues.apache.org/jira/browse/SQOOP-1533
> Project: Sqoop
> Issue Type: Bug
> Environment: ubuntu, Sqoop 1.4.4-cdh5.1.2, java 8
> Reporter: Shigeki Hirose
> Priority: Critical
>
> Sqoop command example:
> {noformat}
> sqoop import --connect "jdbc:mysql://127.0.0.1:3306/xxx" --username xxx
> --password xxx --table SampleTable --hcatalog-database xxx
> --create-hcatalog-table --hcatalog-storage-stanza 'stored as orc'
> --hcatalog-table sampletable
> {noformat}
> Call stack:
> {noformat}
> sqoop.Sqoop: Got exception running Sqoop: java.lang.NullPointerException
> java.lang.NullPointerException
> at
> org.apache.sqoop.mapreduce.hcat.SqoopHCatUtilities.createHCatTable(SqoopHCatUtilities.java:491)
> at
> org.apache.sqoop.mapreduce.hcat.SqoopHCatUtilities.configureHCat(SqoopHCatUtilities.java:293)
> at
> org.apache.sqoop.mapreduce.hcat.SqoopHCatUtilities.configureImportOutputFormat(SqoopHCatUtilities.java:657)
> at
> org.apache.sqoop.mapreduce.ImportJobBase.configureOutputFormat(ImportJobBase.java:98)
> at
> org.apache.sqoop.mapreduce.ImportJobBase.runImport(ImportJobBase.java:240)
> at org.apache.sqoop.manager.SqlManager.importTable(SqlManager.java:614)
> at
> org.apache.sqoop.manager.MySQLManager.importTable(MySQLManager.java:118)
> at org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:413)
> at org.apache.sqoop.tool.ImportTool.run(ImportTool.java:506)
> at org.apache.sqoop.Sqoop.run(Sqoop.java:147)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
> at org.apache.sqoop.Sqoop.runSqoop(Sqoop.java:183)
> at org.apache.sqoop.Sqoop.runTool(Sqoop.java:222)
> at org.apache.sqoop.Sqoop.runTool(Sqoop.java:231)
> at org.apache.sqoop.Sqoop.main(Sqoop.java:240)
> {noformat}
> This seems to be because source MySQL table contains a column name that has
> an upper case letter.
> Sample table below. The column name, 'A', causes the exception.
> {code:sql}
> DROP TABLE `SampleTable`;
> CREATE TABLE `SampleTable` (
> `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
> `A` bigint(20) unsigned NOT NULL DEFAULT '0',
> PRIMARY KEY (`id`)
> ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
> {code}
> Once column name is changed to 'a', it works properly:
> {code:sql}
> DROP TABLE `SampleTable`;
> CREATE TABLE `SampleTable` (
> `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
> `a` bigint(20) unsigned NOT NULL DEFAULT '0',
> PRIMARY KEY (`id`)
> ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
> {code}
> This is probably because LCKeyMap (and HCKeyMap) class in
> SqoopHCatUtilities.java line 160 - 177 are expecting HashMap to call *put*
> method for each element when *putAll* is invoked, which seem to have been the
> case in Java 6/7, but it doesn't behave that way in Java 8.
> {code:java}
> /**
> * A Map using String as key type that ignores case of its key and stores
> the
> * key in lower case.
> */
> private static class LCKeyMap<V> extends HashMap<String, V> {
> private static final long serialVersionUID = -6751510232323094216L;
> @Override
> public V put(String key, V value) {
> return super.put(key.toLowerCase(), value);
> }
> @Override
> public V get(Object key) {
> return super.get(((String) key).toLowerCase());
> }
> }
> {code}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
