目录
一、前言
本次异常是在执行读取hdfs中的数据导入到hbase表中所报的错误，笔者初步判断为没有在代码中指定zookeeper访问地址所导致的问题。
这里笔者提供相关的代码文章，供读者参照。
log4j:WARN No appenders could be found for logger (org.apache.hadoop.util.Shell).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Exception in thread "main" org.apache.hadoop.hbase.client.RetriesExhaustedException: Cannot get the location for replica0 of region for fruit,, in hbase:meta
at org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas.getRegionLocations(RpcRetryingCallerWithReadReplicas.java:336)
at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:162)
at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:58)
at org.apache.hadoop.hbase.client.RpcRetryingCallerImpl.callWithoutRetries(RpcRetryingCallerImpl.java:192)
at org.apache.hadoop.hbase.client.ClientScanner.call(ClientScanner.java:267)
at org.apache.hadoop.hbase.client.ClientScanner.loadCache(ClientScanner.java:435)
at org.apache.hadoop.hbase.client.ClientScanner.nextWithSyncCache(ClientScanner.java:310)
at org.apache.hadoop.hbase.client.ClientScanner.next(ClientScanner.java:595)
at org.apache.hadoop.hbase.MetaTableAccessor.scanMeta(MetaTableAccessor.java:817)
at org.apache.hadoop.hbase.MetaTableAccessor.scanMeta(MetaTableAccessor.java:785)
at org.apache.hadoop.hbase.MetaTableAccessor.scanMeta(MetaTableAccessor.java:738)
at org.apache.hadoop.hbase.MetaTableAccessor.scanMetaForTableRegions(MetaTableAccessor.java:733)
at org.apache.hadoop.hbase.client.HRegionLocator.listRegionLocations(HRegionLocator.java:114)
at org.apache.hadoop.hbase.client.HRegionLocator.getAllRegionLocations(HRegionLocator.java:78)
at org.apache.hadoop.hbase.MetaTableAccessor.getRegionCount(MetaTableAccessor.java:1343)
at org.apache.hadoop.hbase.MetaTableAccessor.getRegionCount(MetaTableAccessor.java:1330)
at org.apache.hadoop.hbase.mapreduce.TableMapReduceUtil.initTableReducerJob(TableMapReduceUtil.java:734)
at org.apache.hadoop.hbase.mapreduce.TableMapReduceUtil.initTableReducerJob(TableMapReduceUtil.java:678)
at org.apache.hadoop.hbase.mapreduce.TableMapReduceUtil.initTableReducerJob(TableMapReduceUtil.java:647)
at com.itcast.hbase.example.Hbase_MapReduce1.ReadDataDriver.main(ReadDataDriver.java:44)
Caused by: java.io.IOException: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase
at org.apache.hadoop.hbase.client.ConnectionImplementation.get(ConnectionImplementation.java:2102)
at org.apache.hadoop.hbase.client.ConnectionImplementation.locateMeta(ConnectionImplementation.java:814)
at org.apache.hadoop.hbase.client.ConnectionImplementation.locateRegion(ConnectionImplementation.java:781)
at org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas.getRegionLocations(RpcRetryingCallerWithReadReplicas.java:328)
... 19 more
Caused by: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase
at org.apache.zookeeper.KeeperException.create(KeeperException.java:102)
at org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
at org.apache.hadoop.hbase.zookeeper.ReadOnlyZKClient$ZKTask$1.exec(ReadOnlyZKClient.java:198)
at org.apache.hadoop.hbase.zookeeper.ReadOnlyZKClient.run(ReadOnlyZKClient.java:342)
at java.lang.Thread.run(Thread.java:750)
Process finished with exit code 1
二、解决方法
在代码中添加如下内容
configuration.set("hbase.zookeeper.quorum","hadoop01:2181,hadoop02:2181,hadoop03:2181");
再次运行，程序正常启动。