版本：2.3
架构：1FE+3BE，表三副本
发现宕掉了一个BE后，truncate无法执行，DATAX客户端错误信息：
2022-08-02 09:04:30.860 [job-0] ERROR JobContainer - Exception when job run
com.alibaba.datax.common.exception.DataXException: Code:[DBUtilErrorCode-07], Description:[读取数据库数据失败. 请检查您的配置的 column/table/where/querySql或者向 DBA 寻求帮助.]. - 执行的SQL为: truncate table bom.core_color_scheme_to_pms_df 具体错误信息为：com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Failed to find enough host in all backends. need: 3, Current alive backend is [10004,10003]
at com.alibaba.datax.common.exception.DataXException.asDataXException(DataXException.java:26) ~[datax-common-0.0.1-SNAPSHOT.jar:na]
at com.alibaba.datax.plugin.rdbms.util.RdbmsException.asQueryException(RdbmsException.java:81) ~[plugin-rdbms-util-0.0.1-SNAPSHOT.jar:na]
at com.starrocks.connector.datax.plugin.writer.starrockswriter.util.StarRocksWriterUtil.executeSqls(StarRocksWriterUtil.java:65) ~[starrockswriter-release.jar:na]
at com.starrocks.connector.datax.plugin.writer.starrockswriter.StarRocksWriter$Job.prepare(StarRocksWriter.java:54) ~[starrockswriter-release.jar:na]
at com.alibaba.datax.core.job.JobContainer.prepareJobWriter(JobContainer.java:724) ~[datax-core-0.0.1-SNAPSHOT.jar:na]
at com.alibaba.datax.core.job.JobContainer.prepare(JobContainer.java:309) ~[datax-core-0.0.1-SNAPSHOT.jar:na]
at com.alibaba.datax.core.job.JobContainer.start(JobContainer.java:115) ~[datax-core-0.0.1-SNAPSHOT.jar:na]
at com.alibaba.datax.core.Engine.start(Engine.java:92) [datax-core-0.0.1-SNAPSHOT.jar:na]
at com.alibaba.datax.core.Engine.entry(Engine.java:171) [datax-core-0.0.1-SNAPSHOT.jar:na]
at com.alibaba.datax.core.Engine.main(Engine.java:204) [datax-core-0.0.1-SNAPSHOT.jar:na]
2022-08-02 09:04:30.864 [job-0] INFO StandAloneJobContainerCommunicator - Total 0 records, 0 bytes | Speed 0B/s, 0 records/s | Error 0 records, 0 bytes | All Task WaitWriterTime 0.000s | All Task WaitReaderTime 0.000s | Percentage 0.00%
2022-08-02 09:04:30.865 [job-0] ERROR Engine -
经DataX智能分析,该任务最可能的错误原因是:
com.alibaba.datax.common.exception.DataXException: Code:[DBUtilErrorCode-07], Description:[读取数据库数据失败. 请检查您的配置的 column/table/where/querySql或者向 DBA 寻求帮助.]. - 执行的SQL为: truncate table bom.core_color_scheme_to_pms_df 具体错误信息为：com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Failed to find enough host in all backends. need: 3, Current alive backend is [10004,10003]
at com.alibaba.datax.common.exception.DataXException.asDataXException(DataXException.java:26)
at com.alibaba.datax.plugin.rdbms.util.RdbmsException.asQueryException(RdbmsException.java:81)
at com.starrocks.connector.datax.plugin.writer.starrockswriter.util.StarRocksWriterUtil.executeSqls(StarRocksWriterUtil.java:65)
at com.starrocks.connector.datax.plugin.writer.starrockswriter.StarRocksWriter$Job.prepare(StarRocksWriter.java:54)
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)
同时，DML是正常的。