信息如下:

2020-11-27 18:52:01,040 INFO  io.debezium.connector.mysql.SnapshotReader        
          
[] - Step 7: - 2910000 of 1311846828 rows scanned from table
'tag.tag_taggedinfo' after 00:16:38.994
2020-11-27 18:52:01,088 INFO  io.debezium.connector.mysql.SnapshotReader        
          
[] - Step 7: committing transaction
2020-11-27 18:52:01,097 ERROR io.debezium.connector.mysql.SnapshotReader        
          
[] - Failed due to error: Aborting snapshot due to error when last running
'SELECT * FROM `low_db`.`t_low_media`': Streaming result set
com.mysql.cj.protocol.a.result.ResultsetRowsStreaming@1e658cc0 is still
active. No statements may be issued when any streaming result sets are open
and in use on a given connection. Ensure that you have called .close() on
any active streaming result sets before attempting more queries.
org.apache.kafka.connect.errors.ConnectException: Streaming result set
com.mysql.cj.protocol.a.result.ResultsetRowsStreaming@1e658cc0 is still
active. No statements may be issued when any streaming result sets are open
and in use on a given connection. Ensure that you have called .close() on
any active streaming result sets before attempting more queries. Error code:
0; SQLSTATE: S1000.
        at
io.debezium.connector.mysql.AbstractReader.wrap(AbstractReader.java:230)
~[blob_p-cdf63b97f57b02ab06e2520753201c5ebcc5134a-46cf2866fe3474b104bc42c62dfec68f:?]
        at
io.debezium.connector.mysql.AbstractReader.failed(AbstractReader.java:207)
~[blob_p-cdf63b97f57b02ab06e2520753201c5ebcc5134a-46cf2866fe3474b104bc42c62dfec68f:?]
        at
io.debezium.connector.mysql.SnapshotReader.execute(SnapshotReader.java:831)
~[blob_p-cdf63b97f57b02ab06e2520753201c5ebcc5134a-46cf2866fe3474b104bc42c62dfec68f:?]
        at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
[?:1.8.0_71]
        at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
[?:1.8.0_71]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_71]
Caused by: java.sql.SQLException: Streaming result set
com.mysql.cj.protocol.a.result.ResultsetRowsStreaming@1e658cc0 is still
active. No statements may be issued when any streaming result sets are open
and in use on a given connection. Ensure that you have called .close() on
any active streaming result sets before attempting more queries.
        at
com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129)
~[blob_p-cdf63b97f57b02ab06e2520753201c5ebcc5134a-46cf2866fe3474b104bc42c62dfec68f:?]
        at
com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97)
~[blob_p-cdf63b97f57b02ab06e2520753201c5ebcc5134a-46cf2866fe3474b104bc42c62dfec68f:?]
        at
com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122)
~[blob_p-cdf63b97f57b02ab06e2520753201c5ebcc5134a-46cf2866fe3474b104bc42c62dfec68f:?]
        at com.mysql.cj.jdbc.ConnectionImpl.commit(ConnectionImpl.java:813)
~[blob_p-cdf63b97f57b02ab06e2520753201c5ebcc5134a-46cf2866fe3474b104bc42c62dfec68f:?]
        at
io.debezium.connector.mysql.SnapshotReader.execute(SnapshotReader.java:747)
~[blob_p-cdf63b97f57b02ab06e2520753201c5ebcc5134a-46cf2866fe3474b104bc42c62dfec68f:?]
        ... 3 more
2020-11-27 18:52:01,147 WARN  io.debezium.connector.mysql.SnapshotReader        
          
[] - Failed to close the connection properly
java.sql.SQLException: Streaming result set
com.mysql.cj.protocol.a.result.ResultsetRowsStreaming@1e658cc0 is still
active. No statements may be issued when any streaming result sets are open
and in use on a given connection. Ensure that you have called .close() on
any active streaming result sets before attempting more queries.
        at
com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129)
~[blob_p-cdf63b97f57b02ab06e2520753201c5ebcc5134a-46cf2866fe3474b104bc42c62dfec68f:?]
        at
com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97)
~[blob_p-cdf63b97f57b02ab06e2520753201c5ebcc5134a-46cf2866fe3474b104bc42c62dfec68f:?]
        at
com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122)
~[blob_p-cdf63b97f57b02ab06e2520753201c5ebcc5134a-46cf2866fe3474b104bc42c62dfec68f:?]
        at
com.mysql.cj.jdbc.ConnectionImpl.rollbackNoChecks(ConnectionImpl.java:1961)
~[blob_p-cdf63b97f57b02ab06e2520753201c5ebcc5134a-46cf2866fe3474b104bc42c62dfec68f:?]
        at
com.mysql.cj.jdbc.ConnectionImpl.rollback(ConnectionImpl.java:1855)
~[blob_p-cdf63b97f57b02ab06e2520753201c5ebcc5134a-46cf2866fe3474b104bc42c62dfec68f:?]
        at
com.mysql.cj.jdbc.ConnectionImpl.realClose(ConnectionImpl.java:1720)
~[blob_p-cdf63b97f57b02ab06e2520753201c5ebcc5134a-46cf2866fe3474b104bc42c62dfec68f:?]
        at com.mysql.cj.jdbc.ConnectionImpl.close(ConnectionImpl.java:720)
~[blob_p-cdf63b97f57b02ab06e2520753201c5ebcc5134a-46cf2866fe3474b104bc42c62dfec68f:?]
        at io.debezium.jdbc.JdbcConnection.close(JdbcConnection.java:849)
~[blob_p-cdf63b97f57b02ab06e2520753201c5ebcc5134a-46cf2866fe3474b104bc42c62dfec68f:?]
        at
io.debezium.connector.mysql.SnapshotReader.execute(SnapshotReader.java:850)
~[blob_p-cdf63b97f57b02ab06e2520753201c5ebcc5134a-46cf2866fe3474b104bc42c62dfec68f:?]
        at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
[?:1.8.0_71]
        at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
[?:1.8.0_71]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_71]
2020-11-27 18:52:01,292 INFO  io.debezium.connector.common.BaseSourceTask       
          
[] - Stopping down connector
2020-11-27 18:52:01,294 INFO  io.debezium.connector.mysql.MySqlConnectorTask    
          
[] - Stopping MySQL connector task
2020-11-27 18:52:01,298 INFO  io.debezium.connector.mysql.ChainedReader         
          
[] - ChainedReader: Stopping the snapshot reader
2020-11-27 18:52:01,317 INFO  io.debezium.connector.mysql.SnapshotReader        
          
[] - Discarding 0 unsent record(s) due to the connector shutting down        

请问有人有遇到过吗?
查了些资料,感觉命中了这个,https://dev.mysql.com/doc/connector-j/5.1/en/connector-j-reference-implementation-notes.html。

但不知道在flink cdc里怎么解决,debezium SnapshotReader 代码写死了。
 
    private Statement createStatementWithLargeResultSet(Connection
connection) throws SQLException {
        int fetchSize = context.getConnectorConfig().getSnapshotFetchSize();
        Statement stmt =
connection.createStatement(ResultSet.TYPE_FORWARD_ONLY,
ResultSet.CONCUR_READ_ONLY);
        stmt.setFetchSize(fetchSize);
        return stmt;
    }

                                                                                
                                                                                
                                                                                
                             



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