使用Java连接到远程HBase服务 [英] Connecting to remote HBase service using Java
问题描述
我有一个小示例代码，我尝试建立与远程HBase实体的连接。代码在没有安装HBase的Windows机器上运行，我尝试连接到安装并运行它的远程Ubuntu服务器。以下代码段中的IP当然只是一个占位符。
I have a small sample code in which I try to establish a connection to a remote HBase entity. The code runs on a windows machine without HBase installed and I try to connect to a remote Ubuntu Server that has it installed and running. The IP in the below snippet is of course just a placeholder.
代码如下：
public static void main(String[] args) {
Configuration conf = HBaseConfiguration.create();
HBaseAdmin admin = null;
String ip = "10.10.10.10";
String port = "2181";
conf.set("hbase.zookeeper.quorum", ip);
conf.set("hbase.zookeeper.property.clientPort", port);
try {
admin = new HBaseAdmin(conf);
boolean bool = admin.tableExists("sensor_data");
System.out.println("Table exists? " + bool);
} catch (IOException e) {
e.printStackTrace();
}
}
但出于某种原因我收到此错误：
But for some reason I get this error:
org.apache.hadoop.hbase.DoNotRetryIOException: java.lang.IllegalAccessError: tried to access method com.google.common.base.Stopwatch.<init>()V from class org.apache.hadoop.hbase.zookeeper.MetaTableLocator
at org.apache.hadoop.hbase.client.RpcRetryingCaller.translateException(RpcRetryingCaller.java:229)
at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:202)
at org.apache.hadoop.hbase.client.ClientScanner.call(ClientScanner.java:320)
at org.apache.hadoop.hbase.client.ClientScanner.nextScanner(ClientScanner.java:295)
at org.apache.hadoop.hbase.client.ClientScanner.initializeScannerInConstruction(ClientScanner.java:160)
at org.apache.hadoop.hbase.client.ClientScanner.<init>(ClientScanner.java:155)
at org.apache.hadoop.hbase.client.HTable.getScanner(HTable.java:811)
at org.apache.hadoop.hbase.MetaTableAccessor.fullScan(MetaTableAccessor.java:602)
at org.apache.hadoop.hbase.MetaTableAccessor.tableExists(MetaTableAccessor.java:366)
at org.apache.hadoop.hbase.client.HBaseAdmin.tableExists(HBaseAdmin.java:303)
at org.apache.hadoop.hbase.client.HBaseAdmin.tableExists(HBaseAdmin.java:313)
at com.twoBM.Tests.HBaseWriter.main(HBaseWriter.java:26)
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.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
Caused by: java.lang.IllegalAccessError: tried to access method com.google.common.base.Stopwatch.<init>()V from class org.apache.hadoop.hbase.zookeeper.MetaTableLocator
at org.apache.hadoop.hbase.zookeeper.MetaTableLocator.blockUntilAvailable(MetaTableLocator.java:596)
at org.apache.hadoop.hbase.zookeeper.MetaTableLocator.blockUntilAvailable(MetaTableLocator.java:580)
at org.apache.hadoop.hbase.zookeeper.MetaTableLocator.blockUntilAvailable(MetaTableLocator.java:559)
at org.apache.hadoop.hbase.client.ZooKeeperRegistry.getMetaRegionLocation(ZooKeeperRegistry.java:61)
at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateMeta(ConnectionManager.java:1185)
at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1152)
at org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas.getRegionLocations(RpcRetryingCallerWithReadReplicas.java:300)
at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:153)
at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:61)
at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:200)
... 15 more
<我正在使用Gradle构建我的项目，目前我只使用以下两个依赖项：
I am using Gradle to build my project and currently I am only using the two following dependencies:
compile 'org.apache.hive:hive-jdbc:2.1.0'
compile 'org.apache.hbase:hbase:1.1.6'
有谁知道解决这个问题？我试过谷歌搜索这个问题，但没有找到任何提供实际解决方案的链接。
Does anyone know to fix this problem? I have tried googling this problem, but without any of the found links providing an actual solution.
祝你好运
推荐答案
这绝对是 Google Guava 的依赖性冲突。自Guava v.17以来， Stopwatch 类的默认构造函数变为私有，甚至更早被标记为已弃用。
This is definitely Google Guava's dependency conflict. The default constructor of Stopwatch class became private since Guava v.17 and marked deprecated even earlier.
因此，要使HBase Java客户端正常工作，您需要Guava v.16或更早版本。检查构建应用程序的方式（Maven / Gradle / Classpath）并找到使用Guava v.17 +的依赖项。之后，您可以解决冲突。
So to HBase Java client works properly you need Guava v.16 or earlier. Check the way you build your application (Maven/Gradle/Classpath) and find the dependency which uses Guava v.17+. After that, you can resolve the conflict.
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