我安装了这个spark版本：spark-1.6.1-bin-hadoop2.6.tgz。
现在当我开始火花时./spark-shell命令我遇到了这个问题（它显示了很多错误行，所以我只放了一些看起来很重要的错误行）
Cleanup action completed
16/03/27 00:19:35 ERROR Schema: Failed initialising database.
Failed to create database 'metastore_db', see the next exception for details.
org.datanucleus.exceptions.NucleusDataStoreException: Failed to create database 'metastore_db', see the next exception for details.
at org.datanucleus.store.rdbms.ConnectionFactoryImpl$ManagedConnectionImpl.getConnection(ConnectionFactoryImpl.java:516)
Caused by: java.sql.SQLException: Directory /usr/local/spark-1.6.1-bin-hadoop2.6/bin/metastore_db cannot be created.
org.apache.derby.impl.jdbc.EmbedConnection.handleException(Unknown Source)
... 128 more
Caused by: ERROR XBM0H: Directory /usr/local/spark-1.6.1-bin-hadoop2.6/bin/metastore_db cannot be created.
Nested Throwables StackTrace:
java.sql.SQLException: Failed to create database 'metastore_db', see the next exception for details.
org.apache.derby.impl.jdbc.EmbedConnection.handleException(Unknown Source)
... 128 more
Caused by: ERROR XBM0H: Directory /usr/local/spark-1.6.1-bin-hadoop2.6/bin/metastore_db cannot be created.
at org.apache.derby.iapi.error.StandardException.newException
Caused by: java.sql.SQLException: Directory /usr/local/spark-1.6.1-bin-hadoop2.6/bin/metastore_db cannot be created.
at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(Unknown Source)
at
... 128 more
<console>:16: error: not found: value sqlContext
import sqlContext.implicits._
^
<console>:16: error: not found: value sqlContext
import sqlContext.sql
^
scala>
我尝试了一些配置来解决这个问题，我在其他有关值 sqlContext 未找到问题的问题中搜索，例如：
/etc/hosts 文件：
127.0.0.1 hadoophost localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
10.2.0.15 hadoophost
echo $HOSTNAME返回：
hadoop主机
.bashrc 文件包含：
export SPARK_LOCAL_IP=127.0.0.1
但不起作用，你能提供一些帮助来尝试理解为什么 Spark 无法正确启动吗？
hive-default.xml.模板
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在主文件夹中我遇到了同样的问题：
[hadoopadmin@hadoop home]$ pwd
/home
[hadoopadmin@hadoop home]$
文件夹权限：
[hadoopdadmin@hadoop spark-1.6.1-bin-hadoop2.6]$ ls -la
total 1416
drwxr-xr-x. 12 hadoop hadoop 4096 .
drwxr-xr-x. 16 root root 4096 ..
drwxr-xr-x. 2 hadoop hadoop 4096 bin
-rw-r--r--. 1 hadoop hadoop 1343562 CHANGES.txt
drwxr-xr-x. 2 hadoop hadoop 4096 conf
drwxr-xr-x. 3 hadoop hadoop 4096 data
drwxr-xr-x. 3 hadoop hadoop 4096 ec2
drwxr-xr-x. 3 hadoop hadoop 4096 examples
drwxr-xr-x. 2 hadoop hadoop 4096 lib
-rw-r--r--. 1 hadoop hadoop 17352 LICENSE
drwxr-xr-x. 2 hadoop hadoop 4096 licenses
-rw-r--r--. 1 hadoop hadoop 23529 NOTICE
drwxr-xr-x. 6 hadoop hadoop 4096 python
drwxr-xr-x. 3 hadoop hadoop 4096 R
-rw-r--r--. 1 hadoop hadoop 3359 README.md
-rw-r--r--. 1 hadoop hadoop 120 RELEASE
drwxr-xr-x. 2 hadoop hadoop 4096 sbin
