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，即使在 spark shell 中导入 Hbase jar 时，它也会给我一个错误。
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.