jinpengSun opened a new issue #15984:
URL: https://github.com/apache/shardingsphere/issues/15984
## Bug Report
Use ShardingSphere-Proxy and Sharding-Scaling to synchronize MySQL data,
and report an error when incrementally synchronizing data: Data truncation: Out
of range value for column xx
### Which version of ShardingSphere did you use?
version 4.1.1 Sharding-Scaling
### Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?
project use ShardingSphere-Proxy
### Expected behavior
incrementally synchronizing success
### Actual behavior
incrementally synchronizing fail
### Reason analyze (If you can)
MySQL column type smallint(6)
MySQL column data value -1
incrementally synchronizing fail
exception：
org.apache.shardingsphere.shardingscaling.core.exception.SyncTaskExecuteException:
com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data truncation: Out of
range value for column 't1_c' at row 1
at
org.apache.shardingsphere.shardingscaling.core.execute.executor.writer.AbstractJDBCWriter.write(AbstractJDBCWriter.java:90)
at
org.apache.shardingsphere.shardingscaling.core.execute.executor.writer.AbstractJDBCWriter.run(AbstractJDBCWriter.java:72)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266)
at java.util.concurrent.FutureTask.run(FutureTask.java)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Reading source code discovery：
class:
org.apache.shardingsphere.database.protocol.mysql.payload.MySQLPacketPayload
method:
public int readInt2() {
return byteBuf.readShortLE() & 0xffff;
}
When &0ffff the byteBuf.readShortLE() value of method execution is - 1,
65535 will be obtained, and an exception will occur: Data truncation: Out of
range value。
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