导入csv文件到oceanbase 报错

datax导入csv文件到oceanbase，一直报错：
2022-01-04 08:58:50.634 [job-0] INFO DbUtils - value for query [show variables like 'version'] is [3.1.1]
2022-01-04 08:58:50.640 [job-0] ERROR JobContainer - Exception when job run
java.lang.NullPointerException: null
at com.alibaba.datax.plugin.writer.oceanbasev10writer.OceanBaseV10Writer$Job.prepare(OceanBaseV10Writer.java:90) ~[oceanbasev10writer-0.0.1-SNAPSHOT.jar:na]
at com.alibaba.datax.core.job.JobContainer.prepareJobWriter(JobContainer.java:724) ~[datax-core-0.0.1-SNAPSHOT.jar:na]
at com.alibaba.datax.core.job.JobContainer.prepare(JobContainer.java:309) ~[datax-core-0.0.1-SNAPSHOT.jar:na]
at com.alibaba.datax.core.job.JobContainer.start(JobContainer.java:115) ~[datax-core-0.0.1-SNAPSHOT.jar:na]
at com.alibaba.datax.core.Engine.start(Engine.java:92) [datax-core-0.0.1-SNAPSHOT.jar:na]
at com.alibaba.datax.core.Engine.entry(Engine.java:171) [datax-core-0.0.1-SNAPSHOT.jar:na]
at com.alibaba.datax.core.Engine.main(Engine.java:204) [datax-core-0.0.1-SNAPSHOT.jar:na]
2022-01-04 08:58:50.649 [job-0] INFO StandAloneJobContainerCommunicator - Total 0 records, 0 bytes | Speed 0B/s, 0 records/s | Error 0 records, 0 bytes | All Task WaitWriterTime 0.000s | All Task WaitReaderTime 0.000s | Percentage 0.00%
2022-01-04 08:58:50.652 [job-0] ERROR Engine -

经DataX智能分析,该任务最可能的错误原因是:
com.alibaba.datax.common.exception.DataXException: Code:[Framework-02], Description:[DataX引擎运行过程出错，具体原因请参看DataX运行结束时的错误诊断信息 .]. - java.lang.NullPointerException
at com.alibaba.datax.plugin.writer.oceanbasev10writer.OceanBaseV10Writer$Job.prepare(OceanBaseV10Writer.java:90)
at com.alibaba.datax.core.job.JobContainer.prepareJobWriter(JobContainer.java:724)
at com.alibaba.datax.core.job.JobContainer.prepare(JobContainer.java:309)
at com.alibaba.datax.core.job.JobContainer.start(JobContainer.java:115)
at com.alibaba.datax.core.Engine.start(Engine.java:92)
at com.alibaba.datax.core.Engine.entry(Engine.java:171)
at com.alibaba.datax.core.Engine.main(Engine.java:204)
- java.lang.NullPointerException
at com.alibaba.datax.plugin.writer.oceanbasev10writer.OceanBaseV10Writer$Job.prepare(OceanBaseV10Writer.java:90)
at com.alibaba.datax.core.job.JobContainer.prepareJobWriter(JobContainer.java:724)
at com.alibaba.datax.core.job.JobContainer.prepare(JobContainer.java:309)
at com.alibaba.datax.core.job.JobContainer.start(JobContainer.java:115)
at com.alibaba.datax.core.Engine.start(Engine.java:92)
at com.alibaba.datax.core.Engine.entry(Engine.java:171)
at com.alibaba.datax.core.Engine.main(Engine.java:204)

at com.alibaba.datax.common.exception.DataXException.asDataXException(DataXException.java:40)
at com.alibaba.datax.core.job.JobContainer.start(JobContainer.java:162)
at com.alibaba.datax.core.Engine.start(Engine.java:92)
at com.alibaba.datax.core.Engine.entry(Engine.java:171)
at com.alibaba.datax.core.Engine.main(Engine.java:204)
Caused by: java.lang.NullPointerException
at com.alibaba.datax.plugin.writer.oceanbasev10writer.OceanBaseV10Writer$Job.prepare(OceanBaseV10Writer.java:90)
at com.alibaba.datax.core.job.JobContainer.prepareJobWriter(JobContainer.java:724)
at com.alibaba.datax.core.job.JobContainer.prepare(JobContainer.java:309)
at com.alibaba.datax.core.job.JobContainer.start(JobContainer.java:115)
... 3 more

Start at com.alibaba.datax.plugin.writer.oceanbasev10writer.OceanBaseV10Writer.java line 90, reached through Job.prepare, and inspect the values used there. Reproduce the CSV-to-OceanBase job with the reported OceanBase 3.1.1 version; done means identifying the null input, preventing the NullPointerException, and confirming that the import proceeds.

Written by the indexing model from the issue text.