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sqoop incremental import of parquet format not working?

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sqoop incremental import of parquet format not working? 17/03/27 02:20:52 INFO mapreduce.Job: Task Id : attempt_1488789739972_0527_m_000002_2, Status : FAILED Error: java.lang.RuntimeException: Can't parse input data: 'PAR1����,��Q��' at QueryResult.__loadFromFields(QueryResult.java:1135) at QueryResult.parse(QueryResult.java:993) at org.apache.sqoop.mapreduce.MergeTextMapper.map(MergeTextMapper.java:53) at org.apache.sqoop.mapreduce.MergeTextMapper.map(MergeTextMapper.java:34) at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:146) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:787) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341) at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:168) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1724) at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:162) Caused by: java.lang.NumberFormatException: For input string: "PAR1����,��Q��"