PolarDB-X中当ddl异常且无法cancel或者continue的时候该如何处理？有两条
1：{"@type":"com.alibaba.polardbx.executor.ddl.newengine.sync.DdlResponse$Response","ddlType":"CREATE_TABLE","jobId":1599938172245024768,"objectName":"iyv6p_icm_group_config","responseContent":"Failed to execute the DDL task. Caused by: ERR-CODE: [PXC-4636][ERR_DDL_JOB_ERROR] Rollback subjob 1599938172685426688 failed with state ROLLBACK_PAUSED. ","responseType":"ERROR","schemaName":"xio_mes"}

1. {"@type":"com.alibaba.polardbx.executor.ddl.newengine.sync.DdlResponse$Response","ddlType":"CREATE_TABLE","jobId":1600176109377327104,"objectName":"iyv6p_icm_ky_value","responseContent":"Failed to execute the DDL task. Caused by: Failed to SYNC to the following nodes:\n10.244.92.52:3406 - wait millis 3008, active 0, maxActive 30, creating 3, createElapseMillis 76857, createErrorCount 24;\n10.244.139.163:3406 - wait millis 3008, active 0, maxActive 30, creating 3, createElapseMillis 76857, createErrorCount 24;\n10.244.139.172:3406 - wait millis 3007, active 0, maxActive 30, creating 3, createElapseMillis 76858, createErrorCount 24;\n10.244.92.46:3406 - wait millis 3008, active 0, maxActive 30, creating 3, createElapseMillis 76857, createErrorCount 24;\n10.244.92.42:3406 - wait millis 3007, active 0, maxActive 30, creating 3, createElapseMillis 76856, createErrorCount 24;\n10.244.139.169:3406 - wait millis 3008, active 0, maxActive 30, creating 3, createElapseMillis 76858, createErrorCount 24;\n","responseType":"ERROR","schemaName":"xio_mes"}k8s部署，2个cn节点
2. 
   是指直接删除pod还是内部杀进程