Question

当我想在sqlline cmd中一个大的hbase表 创建索引且一亿行时，我得到了一个几分钟后异常。我不知道如何解决这个问题。我的环境是：

HBase的（主）：001：0＆GT;版本
1.0.0-cdh5.4.2，rUnknown，Tue May 19 17:07:29 PDT 2015
菲尼克斯
连接到：Phoenix（版本4.6）
驱动程序：PhoenixEmbeddedDriver（版本4.6）
自动提交状态：真实

异常信息如下：

15/12/11 14:20:08 WARN client.ScannerCallable: Ignore, probably already closed
org.apache.hadoop.hbase.UnknownScannerException: org.apache.hadoop.hbase.UnknownScannerException: Name: 37, already closed?
at org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:2092)
at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:31443)
at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2035)
at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:107)
at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:130)
at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:107)
at java.lang.Thread.run(Thread.java:745)
at sun.reflect.GeneratedConstructorAccessor13.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:106)
at org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:95)
at org.apache.hadoop.hbase.protobuf.ProtobufUtil.getRemoteException(ProtobufUtil.java:313)
at org.apache.hadoop.hbase.client.ScannerCallable.close(ScannerCallable.java:329)
at org.apache.hadoop.hbase.client.ScannerCallable.call(ScannerCallable.java:184)
at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:136)
at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:56)
at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:200)
at org.apache.hadoop.hbase.client.ClientScanner.call(ClientScanner.java:288)
at org.apache.hadoop.hbase.client.ClientScanner.close(ClientScanner.java:507)
at org.apache.phoenix.iterate.ScanningResultIterator.close(ScanningResultIterator.java:49)
at org.apache.phoenix.iterate.TableResultIterator.close(TableResultIterator.java:95)
at org.apache.phoenix.jdbc.PhoenixResultSet.close(PhoenixResultSet.java:162)
at org.apache.phoenix.compile.UpsertCompiler.upsertSelect(UpsertCompiler.java:199)
at org.apache.phoenix.compile.UpsertCompiler.access$000(UpsertCompiler.java:114)
at org.apache.phoenix.compile.UpsertCompiler$UpsertingParallelIteratorFactory.mutate(UpsertCompiler.java:229)
at org.apache.phoenix.compile.MutatingParallelIteratorFactory.newIterator(MutatingParallelIteratorFactory.java:62)
at org.apache.phoenix.iterate.ParallelIterators$1.call(ParallelIterators.java:109)
at org.apache.phoenix.iterate.ParallelIterators$1.call(ParallelIterators.java:100)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at org.apache.phoenix.job.JobManager$InstrumentedJobFutureTask.run(JobManager.java:183)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.hadoop.hbase.ipc.RemoteWithExtrasException(org.apache.hadoop.hbase.UnknownScannerException): org.apache.hadoop.hbase.UnknownScannerException: Name: 37, already closed?
at org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:2092)
at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:31443)
at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2035)
at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:107)
at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:130)
at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:107)
at java.lang.Thread.run(Thread.java:745)
at org.apache.hadoop.hbase.ipc.RpcClientImpl.call(RpcClientImpl.java:1199)
at org.apache.hadoop.hbase.ipc.AbstractRpcClient.callBlockingMethod(AbstractRpcClient.java:216)
at org.apache.hadoop.hbase.ipc.AbstractRpcClient$BlockingRpcChannelImplementation.callBlockingMethod(AbstractRpcClient.java:300)
at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$BlockingStub.scan(ClientProtos.java:31889)
at org.apache.hadoop.hbase.client.ScannerCallable.close(ScannerCallable.java:327)
... 20 more

Answer 1

此错误是由于HBase扫描程序超时，将hbase.client.scanner.timeout.period中的参数hbase-site.xml设置为足够大的值并重新启动群集。

但是，在处理包含数百万行的大表时，最好使用异步索引

Answer 2

好吧，我从凤凰官方网站得到了一些帮助：

https://phoenix.apache.org/secondary_indexing.html

为了引入'Index Population'部分，当源表很大时，我们可以通过在索引创建DDL语句中包含ASYNC关键字来异步使用create index。

示例：

CREATE INDEX async_index ON my_schema.my_table (v) ASYNC

然后我们可以使用mapreduce工具'IndexTool'来更新我们的索引表以与源表同步，然后自动将索引表设置为在mapreduce作业成功完成时处于活动状态。

示例：

${HBASE_HOME}/bin/hbase org.apache.phoenix.mapreduce.index.IndexTool
  --schema MY_SCHEMA --data-table MY_TABLE --index-table ASYNC_IDX
  --output-path ASYNC_IDX_HFILES

这种方法可以避免上述异常。

凤凰创建索引满足异常

2 个答案: