问题
Following this example, running the test script "python put_get_with_client.py" results in a 400 error (Bad Request).
Bad request java.lang.ClassCastException: org.apache.hadoop.hbase.client.BigtableConnection cannot be cast to org.apache.hadoop.hbase.client.ClusterConnection at org.apache.hadoop.hbase.client.ConnectionManager.createConnection(ConnectionManager.java:410) at org.apache.hadoop.hbase.client.ConnectionManager.createConnection(ConnectionManager.java:370) at org.apache.hadoop.hbase.client.HConnectionManager.createConnection(HConnectionManager.java:197) at org.apache.hadoop.hbase.util.ConnectionCache.getCurrentConnection(ConnectionCache.java:170) at org.apache.hadoop.hbase.util.ConnectionCache.getAdmin(ConnectionCache.java:124) at org.apache.hadoop.hbase.rest.RESTServlet.getAdmin(RESTServlet.java:102) at org.apache.hadoop.hbase.rest.RootResource.getTableList(RootResource.java:64) at org.apache.hadoop.hbase.rest.RootResource.get(RootResource.java:80) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60) at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205) at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75) at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288) at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108) at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84) at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1469) at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1400) at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349) at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339) at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416) at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537) at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:699) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221) at org.apache.hadoop.hbase.rest.filter.GzipFilter.doFilter(GzipFilter.java:76) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:326) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410) at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
So, I guess BigtableConnection does not implement the ClusterConnection interface? Is the example correct?
回答1:
As mentioned in the comments above, we have submitted patches to the Apache HBase project to fix ReST and Thrift -- they've also been accepted and integrated. While we wait for a release which incorporates them to be release, we've released a temporary fork of 1.0.1 to help you work with this. We will be removing this fork as soon as these changes are incorporated.
来源：https://stackoverflow.com/questions/30131439/unable-to-connect-to-google-bigtable-using-hbase-rest-api