[bug]datax把mysql数据迁移到ob，使用"preSql": ["truncate table XXX"],无数据

[Flutemr]

{
"job": {
"setting": {
"speed": {
"channel": 4
},
"errorLimit": {
"record": 0,
"percentage": 0.1
}
},
"content": [
{
"reader": {
"name": "mysqlreader",
"parameter": {
"username": "root",
"password": "XXXXX",
"column": [
""
],
"where": "dt='${bizdate}'",
"connection": [
{
"table": ["XXXXX"],
"jdbcUrl": ["jdbc:mysql://XXXX:3306/za_ods?useUnicode=true&characterEncoding=utf8&serverTimezone=Asia/Shanghai"]
}
]
}
},
"writer": {
"name": "oceanbasev10writer",
"parameter": {
"obWriteMode": "insert",
"column": [
""
],
"preSql": ["truncate table XXXXX"],
"connection": [
{
"jdbcUrl": "||dsc_ob10_dsc||obyyt:nldz||dsc_ob10_dsc||jdbc:oceanbase://XXXX:2883/dgped_bus_zaxq?useLocalSessionState=true&allowBatch=true&allowMultiQueries=true&rewriteBatchedStatements=true",
"table": ["XXXX"]
}
],
"username": "root",
"password": "XXXX",
"writerThreadCount": 10,
"batchSize": 1000,
"memstoreThreshold": "0.9"
}
}
}
]
}
}

加上"preSql": ["truncate table XXXXX"], 后，发现任务能运行成功，但是表里没有数据。去掉这个后，没问题。

[Flutemr]

oceabase的是4.2.5版本。有人遇到过这个情况吗，truncate table 和delete from 都不行