remove log error, instead of error packet

import io.shardingsphere.transaction.xa.AtomikosUserTransaction;

import lombok.Getter;

import lombok.Setter;

import lombok.extern.slf4j.Slf4j;

import javax.sql.DataSource;

import javax.transaction.Status;

 * @author zhaojun

 */

@Getter

@Slf4j

public abstract class JDBCBackendHandler implements BackendHandler {

    private final String sql;

        try {

            return execute(ruleRegistry.isMasterSlaveOnly() ? doMasterSlaveRoute() : doShardingRoute());

        } catch (final Exception ex) {

            log.error("ExecuteBackendHandler", ex);

            return new CommandResponsePackets(new ErrPacket(1, new SQLException(ex)));

        }

    }

import io.shardingsphere.proxy.transport.mysql.packet.generic.OKPacket;

import lombok.AllArgsConstructor;

import lombok.Getter;

import lombok.extern.slf4j.Slf4j;

import java.sql.ResultSet;

import java.sql.ResultSetMetaData;

 */

@AllArgsConstructor

@Getter

@Slf4j

public abstract class JDBCExecuteWorker implements Callable<CommandResponsePackets> {

    private final JDBCBackendHandler executeBackendHandler;

    public CommandResponsePackets call() {

        try {

            return execute();

        } catch (SQLException ex) {

            log.error("ExecuteWorker", ex);

        } catch (final SQLException ex) {

            return new CommandResponsePackets(new ErrPacket(1, ex));

        } finally {

            MasterVisitedManager.clear();

                return new CommandResponsePackets(new OKPacket(1));

            }

        } catch (final Exception ex) {

            log.error("doTransactionIntercept Exception", ex);

            return new CommandResponsePackets(new ErrPacket(1, new SQLException(ex)));

        }

        return backendHandler.execute();