Ajay Chitre created SQOOP-1300:
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Summary: ToolRunner is not thread-safe
Key: SQOOP-1300
URL: https://issues.apache.org/jira/browse/SQOOP-1300
Project: Sqoop
Issue Type: Bug
Components: tools
Reporter: Ajay Chitre
Priority: Critical
ToolRunner class is not thread-safe because it uses GenericOptionsParser. The
constructor of GenericOptionsParser uses 'OptionBuilder' which is a singleton
class that uses instance variables. In other words, OptionBuilder is NOT
thread safe. As a result, when multiple Hadoop jobs are triggered
simultaneously using ToolRunner they end up stepping on each other.
The easiest way to fix it is by making 'buildGeneralOptions' synchronized in
GenericOptionsParser.
private static synchronized Options buildGeneralOptions(Options opts) {
If this seems like a correct way of fixing this, either we can provide a patch
or someone can quickly fix it. Thanks.
- Ajay Chitre
[email protected]
Virendra Singh
[email protected]
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