Question

启动spark-shell时，我收到了一堆WARN条消息。但我无法理解他们。我应该注意哪些重要问题？或者我错过了任何配置？或者这些WARN消息是正常的。

cliu@cliu-ubuntu:Apache-Spark$ spark-shell 
log4j:WARN No appenders could be found for logger (org.apache.hadoop.metrics2.lib.MutableMetricsFactory).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Using Spark's repl log4j profile: org/apache/spark/log4j-defaults-repl.properties
To adjust logging level use sc.setLogLevel("INFO")
Welcome to
      ____              __
     / __/__  ___ _____/ /__
    _\ \/ _ \/ _ `/ __/  '_/
   /___/ .__/\_,_/_/ /_/\_\   version 1.5.2
      /_/

Using Scala version 2.10.4 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_66)
Type in expressions to have them evaluated.
Type :help for more information.
15/11/30 11:43:54 WARN Utils: Your hostname, cliu-ubuntu resolves to a loopback address: 127.0.1.1; using xxx.xxx.xxx.xx (`here I hide my IP`) instead (on interface wlan0)
15/11/30 11:43:54 WARN Utils: Set SPARK_LOCAL_IP if you need to bind to another address
15/11/30 11:43:55 WARN MetricsSystem: Using default name DAGScheduler for source because spark.app.id is not set.
Spark context available as sc.
15/11/30 11:43:58 WARN Connection: BoneCP specified but not present in CLASSPATH (or one of dependencies)
15/11/30 11:43:58 WARN Connection: BoneCP specified but not present in CLASSPATH (or one of dependencies)
15/11/30 11:44:11 WARN ObjectStore: Version information not found in metastore. hive.metastore.schema.verification is not enabled so recording the schema version 1.2.0
15/11/30 11:44:11 WARN ObjectStore: Failed to get database default, returning NoSuchObjectException
15/11/30 11:44:14 WARN NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
15/11/30 11:44:14 WARN Connection: BoneCP specified but not present in CLASSPATH (or one of dependencies)
15/11/30 11:44:14 WARN Connection: BoneCP specified but not present in CLASSPATH (or one of dependencies)
15/11/30 11:44:27 WARN ObjectStore: Version information not found in metastore. hive.metastore.schema.verification is not enabled so recording the schema version 1.2.0
15/11/30 11:44:27 WARN ObjectStore: Failed to get database default, returning NoSuchObjectException
SQL context available as sqlContext.

scala>

Answer 1

这一个：

15/11/30 11:43:54 WARN Utils: Your hostname, cliu-ubuntu resolves to a loopback address: 127.0.1.1; using xxx.xxx.xxx.xx (`here I hide my IP`) instead (on interface wlan0)
15/11/30 11:43:54 WARN Utils: Set SPARK_LOCAL_IP if you need to bind to another address

表示驱动程序为自己设法找出的主机名不可路由，因此不允许远程连接。在您的本地环境中，这不是问题，但如果您进行多机配置，Spark将无法正常运行。因此，WARN消息可能是也可能不是问题。只是一个单挑。

Answer 2

日志信息绝对正常。这里BoneCP尝试绑定到JDBC连接，这就是您收到这些警告的原因。在任何情况下，如果您想管理日志记录，您可以通过复制<spark-path>/conf/log4j.properties.template来指定日志记录级别将文件发送到<spark-path>/conf/log4j.properties并进行配置。

最后，可以在此处找到类似的日志记录级别答案： How to stop messages displaying on spark console?

启动spark-shell时WARN消息的含义是什么？

2 个答案: