我正在尝试运行以下代码:
Cluster cluster = new Cluster();
cluster.add("localhost", port_number);
Client client = new Client(cluster);
RemoteHTable table = new RemoteHTable(client, "my_table");
Scan scan = new Scan();
scan.setStartRow(startKey);
scan.setStopRow(endKey);
scan.addFamily(columnFamily);
ResultScanner scanner = table.getScanner(scan);
但最后一行抛出:
Exception in thread "main" java.lang.UnsupportedOperationException: This is supposed to be overridden by subclasses. at com.google.protobuf.GeneratedMessage.getUnknownFields(GeneratedMessage.java:180) at org.apache.hadoop.hbase.rest.protobuf.generated.ScannerMessage$Scanner.getSerializedSize(ScannerMessage.java:274) at com.google.protobuf.AbstractMessageLite.toByteArray(AbstractMessageLite.java:62) at org.apache.hadoop.hbase.rest.model.ScannerModel.createProtobufOutput(ScannerModel.java:705) at org.apache.hadoop.hbase.rest.client.RemoteHTable$Scanner.(RemoteHTable.java:510) at org.apache.hadoop.hbase.rest.client.RemoteHTable.getScanner(RemoteHTable.java:620) at com.amazon.cq.banyan.hbase.example.HBaseRestClient.main(HBaseRestClient.java:55)
This is my pom.xml:
<dependency>
<groupId>org.apache.hadoop</groupId>
<artifactId>hadoop-common</artifactId>
<version>2.6.0</version>
</dependency>
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase</artifactId>
<version>0.94.18</version>
</dependency>
尝试执行 Put 时也会发生这种情况。
最佳答案
这是由于使用了不同版本的 protobuf jar。此链接将帮助您理解问题 https://code.google.com/p/protobuf/issues/detail?id=493
关于java - HBase 获取扫描器异常 - "This is supposed to be overridden by subclasses",我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/29044309/