DataImportHandler does not catch and log Errors
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                 Key: SOLR-864
                 URL: https://issues.apache.org/jira/browse/SOLR-864
             Project: Solr
          Issue Type: Bug
          Components: contrib - DataImportHandler
    Affects Versions: 1.3
            Reporter: Shalin Shekhar Mangar
            Assignee: Shalin Shekhar Mangar
             Fix For: 1.4


DataImportHandler catches only 'Exception' types but not 'Error' sub-classes, 
therefore, errors like StackOverflowError and others silently slip by and are 
not logged anywhere. Even though DataImportHandler does not commit documents in 
such case, in the absence of an entry in the log, it becomes very difficult to 
track down the cause.

Look at http://markmail.org/message/mhqae66p262d5mcc for discussion on 
solr-user.

DataImportHandler should catch Throwable and log all errors/exceptions.

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