OTS 批量写入时报 UnsupportedOperationException 异常

使用 SyncClient.batchWriteRow 方法批量写入 OTS 时报了如下错误：

java.lang.reflect.InvocationTargetException: null
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at com.mokasz.zy.server.game.system.job.helper.ScheduleRunnable.run(ScheduleRunnable.java:38)
    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$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.UnsupportedOperationException: This is supposed to be overridden by subclasses.
    at com.google.protobuf.GeneratedMessage.getUnknownFields(GeneratedMessage.java:262)
    at com.alicloud.openservices.tablestore.core.protocol.OtsInternalApi$Condition.getSerializedSize(OtsInternalApi.java:4644)
    at com.google.protobuf.CodedOutputStream.computeMessageSizeNoTag(CodedOutputStream.java:877)
    at com.google.protobuf.CodedOutputStream.computeMessageSize(CodedOutputStream.java:661)
    at com.alicloud.openservices.tablestore.core.protocol.OtsInternalApi$RowInBatchWriteRowRequest.getSerializedSize(OtsInternalApi.java:30734)
    at com.google.protobuf.CodedOutputStream.computeMessageSizeNoTag(CodedOutputStream.java:877)
    at com.google.protobuf.CodedOutputStream.computeMessageSize(CodedOutputStream.java:661)
    at com.alicloud.openservices.tablestore.core.protocol.OtsInternalApi$TableInBatchWriteRowRequest.getSerializedSize(OtsInternalApi.java:31444)
    at com.google.protobuf.CodedOutputStream.computeMessageSizeNoTag(CodedOutputStream.java:877)
    at com.google.protobuf.CodedOutputStream.computeMessageSize(CodedOutputStream.java:661)
    at com.alicloud.openservices.tablestore.core.protocol.OtsInternalApi$BatchWriteRowRequest.getSerializedSize(OtsInternalApi.java:32104)
    at com.google.protobuf.AbstractMessageLite.toByteArray(AbstractMessageLite.java:69)
    at com.alicloud.openservices.tablestore.core.OperationLauncher.asyncInvokePost(OperationLauncher.java:117)
    at com.alicloud.openservices.tablestore.core.BatchWriteRowLauncher.fire(BatchWriteRowLauncher.java:64)
    at com.alicloud.openservices.tablestore.InternalClient.batchWriteRow(InternalClient.java:609)
    at com.alicloud.openservices.tablestore.SyncClient.batchWriteRow(SyncClient.java:282)
    ... 11 common frames omitted

参考官方文档，说是由于包冲突导致的。查了下果然在另外的包中依赖了 protobuf-java 的 3.13.0 版本，而项目中依赖的 tablestore 5.4.0 中依赖的是 protobuf-java 2.4.1 。

官方文档中也给出了解决方案，在 tablestore 的依赖中添加下面配置中的 classifier 和 exclusions 部分。需要注意的是其中 <classifier>jar-with-dependencies</classifier> 部分不能省略。

<dependency>
    <groupId>com.aliyun.openservices</groupId>
    <artifactId>tablestore</artifactId>
    <version>替换为您当前使用的版本</version>
    <classifier>jar-with-dependencies</classifier>
    <exclusions>
        <exclusion>
            <groupId>com.google.protobuf</groupId>
            <artifactId>protobuf-java</artifactId>
        </exclusion>
        <exclusion>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpasyncclient</artifactId>
        </exclusion>
    </exclusions>
</dependency>

说明

classifier 为 jar-with-dependencies ，它将依赖的 HttpClient 和 Protobuf 库都通过 rename package 的方式打包进去，去除了对 HttpClient 和 Protobuf 的依赖。

附上 SyncClient 批量写入的部分示例代码：

import com.alicloud.openservices.tablestore.SyncClient;
import com.alicloud.openservices.tablestore.model.*;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
@Slf4j
@RequiredArgsConstructor
public class OtsServiceImpl implements OtsService {

    private final SyncClient syncClient;

    @Override
    public void saveUserLogs(List<UserLogDO> userLogs) {
        BatchWriteRowRequest batchWriteRowRequest = new BatchWriteRowRequest();

        userLogs.stream().map(l -> l.toRowPutChange())
                .forEach(c -> batchWriteRowRequest.addRowChange(c));

        BatchWriteRowResponse batchWriteRowResponse = syncClient.batchWriteRow(batchWriteRowRequest);

        log.info("saveUserVideoLogs SucceedRows : {} FailedRows: {}",
                batchWriteRowResponse.getSucceedRows().size(),
                batchWriteRowResponse.getFailedRows().size());
    }
}