Spark Shell无法找到Hbase类

时间：2014-11-02 19:03:32

标签： spark-streaming

我正在尝试使用Spark Streaming将数据从HDFS加载到Hbase表。     我将数据放在HDFS目录运行时并使用textFileStream函数读取它。     由于spark在类路径中没有hbase jar，因此即使在火花壳中导入Hbase jar时也会出错。

scala> import org.apache.hadoop.hbase.mapred.TableOutputFormat
<console>:10: error: object hbase is not a member of package org.apache.hadoop
       import org.apache.hadoop.hbase.mapred.TableOutputFormat

But if i add the hbase jars in the classpath while starting the spark shell then i am not getting any error. But it is still not able to find certain classes down the path.

bin/spark-shell --jars /hbase/hbase-0.94.13/hbase-0.94.13-mapr-1401.jar

scala> import org.apache.hadoop.hbase.{ HBaseConfiguration, HColumnDescriptor, HTableDescriptor }
import org.apache.hadoop.hbase.{HBaseConfiguration, HColumnDescriptor, HTableDescriptor}

scala> import org.apache.hadoop.hbase.client.{ HBaseAdmin, Put }
import org.apache.hadoop.hbase.client.{HBaseAdmin, Put}

scala> import org.apache.hadoop.hbase.io.ImmutableBytesWritable
import org.apache.hadoop.hbase.io.ImmutableBytesWritable

scala> import org.apache.hadoop.hbase.mapred.TableOutputFormat
import org.apache.hadoop.hbase.mapred.TableOutputFormat

scala> import org.apache.hadoop.hbase.mapreduce.TableInputFormat
import org.apache.hadoop.hbase.mapreduce.TableInputFormat

scala> import org.apache.hadoop.hbase.util.Bytes
import org.apache.hadoop.hbase.util.Bytes

scala> import org.apache.hadoop.mapred.JobConf
import org.apache.hadoop.mapred.JobConf

scala> import org.apache.spark.SparkContext
import org.apache.spark.SparkContext

scala> import org.apache.spark.rdd.{ PairRDDFunctions, RDD }
import org.apache.spark.rdd.{PairRDDFunctions, RDD}

scala> import org.apache.spark.streaming._
import org.apache.spark.streaming._

scala> import org.apache.spark.streaming.StreamingContext._
import org.apache.spark.streaming.StreamingContext._

scala> import org.apache.hadoop.hbase.client.mapr.{BaseTableMappingRules}
import org.apache.hadoop.hbase.client.mapr.BaseTableMappingRules

scala> val conf = HBaseConfiguration.create()
conf: org.apache.hadoop.conf.Configuration = Configuration: core-default.xml, core-site.xml, mapred-default.xml, mapred-site.xml, hbase-default.xml, hbase-site.xml

scala> val hbaseTableName = "/app/dev/MarketingIt/hbasetables/spark_test"
hbaseTableName: String = /app/dev/MarketingIt/hbasetables/spark_test

scala> val admin = new HBaseAdmin(conf)
java.lang.RuntimeException: java.io.IOException: java.lang.RuntimeException: Error occurred while instantiating com.mapr.fs.MapRTableMappingRules.
==> org/apache/hadoop/hbase/client/mapr/BaseTableMappingRules.
        at org.apache.hadoop.hbase.client.HBaseAdmin.commonInit(HBaseAdmin.java:356)
        at org.apache.hadoop.hbase.client.HBaseAdmin.<init>(HBaseAdmin.java:156)
        at $iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC.<init>(<console>:31)
        at $iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC.<init>(<console>:36)
        at $iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC.<init>(<console>:38)
        at $iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC.<init>(<console>:40)
        at $iwC$$iwC$$iwC$$iwC$$iwC$$iwC.<init>(<console>:42)
        at $iwC$$iwC$$iwC$$iwC$$iwC.<init>(<console>:44)
        at $iwC$$iwC$$iwC$$iwC.<init>(<console>:46)
        at $iwC$$iwC$$iwC.<init>(<console>:48)
        at $iwC$$iwC.<init>(<console>:50)
        at $iwC.<init>(<console>:52)
        at <init>(<console>:54)
        at .<init>(<console>:58)
        at .<clinit>(<console>)
        at .<init>(<console>:7)
        at .<clinit>(<console>)
        at $print(<console>)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.apache.spark.repl.SparkIMain$ReadEvalPrint.call(SparkIMain.scala:788)
        at org.apache.spark.repl.SparkIMain$Request.loadAndRun(SparkIMain.scala:1056)
        at org.apache.spark.repl.SparkIMain.loadAndRunReq$1(SparkIMain.scala:614)
        at org.apache.spark.repl.SparkIMain.interpret(SparkIMain.scala:645)
        at org.apache.spark.repl.SparkIMain.interpret(SparkIMain.scala:609)
        at org.apache.spark.repl.SparkILoop.reallyInterpret$1(SparkILoop.scala:796)
        at org.apache.spark.repl.SparkILoop.interpretStartingWith(SparkILoop.scala:841)
        at org.apache.spark.repl.SparkILoop.command(SparkILoop.scala:753)
        at org.apache.spark.repl.SparkILoop.processLine$1(SparkILoop.scala:601)
        at org.apache.spark.repl.SparkILoop.innerLoop$1(SparkILoop.scala:608)
        at org.apache.spark.repl.SparkILoop.loop(SparkILoop.scala:611)
        at org.apache.spark.repl.SparkILoop$$anonfun$process$1.apply$mcZ$sp(SparkILoop.scala:936)
        at org.apache.spark.repl.SparkILoop$$anonfun$process$1.apply(SparkILoop.scala:884)
        at org.apache.spark.repl.SparkILoop$$anonfun$process$1.apply(SparkILoop.scala:884)
        at scala.tools.nsc.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:135)
        at org.apache.spark.repl.SparkILoop.process(SparkILoop.scala:884)
        at org.apache.spark.repl.SparkILoop.process(SparkILoop.scala:982)
        at org.apache.spark.repl.Main$.main(Main.scala:31)
        at org.apache.spark.repl.Main.main(Main.scala)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.apache.spark.deploy.SparkSubmit$.launch(SparkSubmit.scala:303)
        at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:55)
        at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
Caused by: java.io.IOException: java.lang.RuntimeException: Error occurred while instantiating com.mapr.fs.MapRTableMappingRules.
==> org/apache/hadoop/hbase/client/mapr/BaseTableMappingRules.
        at org.apache.hadoop.hbase.client.mapr.TableMappingRulesFactory.create(TableMappingRulesFactory.java:65)
        at org.apache.hadoop.hbase.client.HBaseAdmin.commonInit(HBaseAdmin.java:348)
        ... 47 more
Caused by: java.lang.RuntimeException: Error occurred while instantiating com.mapr.fs.MapRTableMappingRules.
==> org/apache/hadoop/hbase/client/mapr/BaseTableMappingRules.
        at org.apache.hadoop.hbase.client.mapr.GenericHFactory.getImplementorInstance(GenericHFactory.java:40)
        at org.apache.hadoop.hbase.client.mapr.TableMappingRulesFactory.create(TableMappingRulesFactory.java:47)
        ... 48 more
Caused by: java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/client/mapr/BaseTableMappingRules
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:412)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:190)
        at org.apache.hadoop.hbase.client.mapr.GenericHFactory.getImplementorInstance(GenericHFactory.java:30)
        ... 49 more
Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.hbase.client.mapr.BaseTableMappingRules
        at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
        ... 65 more

Here  as you can see i have added all the hbase jars and spark is able to find some of the hbase classes and cant find some
All the classes are in the same jar i added. Since it is saying Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.hbase.client.mapr.BaseTableMappingRules. I have imported that class specifically. But i still get the same error.

2 个答案:

答案 0 :(得分：3)

如果您使用的是Spark 1. +，请尝试在Spark配置中设置额外的Class Path属性

将此行添加到spark-defaults.conf -

  

spark.executor.extraClassPath   /opt/cloudera/parcels/CDH/lib/hive/lib/hive-hbase-handler.jar:/opt/cloudera/parcels/CDH/lib/hbase/hbase-server.jar:/opt/cloudera/parcels/CDH /lib/hbase/hbase-protocol.jar:/opt/cloudera/parcels/CDH/lib/hbase/hbase-hadoop2-compat.jar:/opt/cloudera/parcels/CDH/lib/hbase/hbase-client.jar ：/opt/cloudera/parcels/CDH/lib/hbase/hbase-common.jar：/opt/cloudera/parcels/CDH/lib/hbase/lib/htrace-core.jar

如果您正在使用其他发行版，请查找jar文件的相应路径。

除配置更改外，将驱动程序类路径添加到spark shell或将提交spark作业添加为 -

  

- 驱动器级的路径
  /opt/cloudera/parcels/CDH/lib/hbase/hbase-server.jar:/opt/cloudera/parcels/CDH/lib/hbase/hbase-protocol.jar:/opt/cloudera/parcels/CDH/lib/hbase /hbase-hadoop2-compat.jar:/opt/cloudera/parcels/CDH/lib/hbase/hbase-client.jar:/opt/cloudera/parcels/CDH/lib/hbase/hbase-common.jar:/opt/ Cloudera的/包裹/ CDH / LIB / HBase的/ LIB / HTRACE-core.jar添加

您可以将jar文件添加到spark-env.sh中的spark类路径，以避免每次要启动spark-shell或提交spark作业时指定完整路径，但在使用此方法时遇到其他问题。我发现上面的选项对我来说效果更好。

  

出口   SPARK_CLASSPATH = /选择/ Cloudera的/包裹/ CDH / LIB / HBase的/ HBase的-的server.jar：/opt/cloudera/parcels/CDH/lib/hbase/hbase-protocol.jar中：/ opt / Cloudera的/包裹/ CDH / lib中/hbase/hbase-hadoop2-compat.jar:/opt/cloudera/parcels/CDH/lib/hbase/hbase-client.jar:/opt/cloudera/parcels/CDH/lib/hbase/hbase-common.jar:/选择/ Cloudera的/包裹/ CDH / LIB / HBase的/ LIB / HTRACE-core.jar添加

Spark 1. +

不再需要了

如果你使用的是Spark 0.9，请看这个链接 - 是的，链接可能会中断，但我没有在Spark 0.9上测试过这个博客有用的信息 http://www.abcn.net/2014/07/lighting-spark-with-hbase-full-edition.html

答案 1 :(得分：2)

Add line in conf/spark-env.sh

Replace ${HBASE_HOME} with Full path

export SPARK_CLASSPATH=${HBASE_HOME}/lib/*

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