写MR Job的时候遇到一个坑爹的异常: LongWritable cannot be cast to org.apache.hadoop.io.IntWritable 当写Map的时候,key的默认输入就是LongWritable. 因为LongWritable指代Block中的数据偏移量. 所以把它强行转换成Text当然就Error了.. public static class TempMapper extends Mapper<LongWritable, Text, IntWritable…
spark 2.1.1 spark在写数据到hive外部表(底层数据在hbase中)时会报错 Caused by: java.lang.ClassCastException: org.apache.hadoop.hive.hbase.HiveHBaseTableOutputFormat cannot be cast to org.apache.hadoop.hive.ql.io.HiveOutputFormat at org.apache.spark.sql.hive.SparkHiveWrit…
报错 java.lang.Exception: java.lang.ClassCastException: org.apache.hadoop.mapreduce.lib.input.FileSplit cannot be cast to org.apache.hadoop.mapred.FileSplit at org.apache.hadoop.mapred.LocalJobRunner$Job.runTasks(LocalJobRunner.java:462) at org.a…
hive表在创建时候指定存储格式 STORED AS ORC tblproperties ('orc.compress'='SNAPPY'); 当insert数据到表时抛出异常 Caused by: java.lang.ClassCastException: org.apache.hadoop.io.Text cannot be cast to org.apache.hadoop.hive.ql.io.orc.OrcSerde$OrcSerdeRow at org.apache.hadoop.h…
What Is Apache Hadoop? Getting Started Download Hadoop Who Uses Hadoop? News 15 October, 2013: release 2.2.0 available 25 August, 2013: release 2.1.0-beta available 27 December, 2011: release 1.0.0 available March 2011 - Apache Hadoop takes top prize…
Exception in thread "main" java.lang.RuntimeException: org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient at org.apache.hadoop.hive…
[root@node1 ~]# hive which: no hbase in (/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/opt/app/jdk1.7.0_79/bin:/opt/app/zookeeper-3.4.9/bin:/opt/app/hadoop-2.7.3/bin:/opt/app/hadoop-2.7.3/sbin:/opt/app/hive-2.1.1/bin:/root/bin) SLF4J:…
Using Spark's default log4j profile: org/apache/spark/log4j-defaults.properties Exception in thread "main" java.io.IOException: java.lang.reflect.InvocationTargetException at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(Conn…
错误日志如下: [hadoop@master hive1.0.0]$ bin/hive Logging initialized using configuration in file:/opt/modules/hive1.0.0/conf/hive-log4j.properties SLF4J: Class path contains multiple SLF4J bindings. SLF4J: Found binding in [jar:file:/opt/modules/hadoop-2.…
Task with the most failures(): ----- Task ID: task_1555476136794_8201_m_000000 URL: http://hadoop1:8088/taskdetails.jsp?jobid=job_1555476136794_8201&tipid=task_1555476136794_8201_m_000000 ----- Diagnostic Messages for this Task: Error: java.lang.Runt…
错误: Caused by: java.lang.ClassCastException: class java.lang.Double cannot be cast to class org.apache.hadoop.io.WritableComparable (java.lang.Double is in module java.base of loader 'bootstrap'; org.apache.hadoop.io.WritableComparable is in unnamed…
es for apache hadoop(elasticsearch-hadoop.jar)允许hadoop作业(mapreduce.hive.pig.cascading.spark)与es交互. At the core, elasticsearch-hadoop integrates two distributed systems: Hadoop, a distributed computing platform and Elasticsearch, a real-time search an…