我试图通过使用log4j flume appender的flume将log4j 1x中的事件获取到hdfs中。创建了两个appender文件和flume。它适用于文件appender,但对于flume appender,程序只是挂起在eclipse中。flume工作正常,我可以使用avro客户端将消息发送到avro源,并在hdfs中查看消息。但是,它没有与log4j 1x集成。
我没有看到任何例外,除了下面的logout.out。
Batch size string = null
Using Netty bootstrap options: {tcpNoDelay=true, connectTimeoutMillis=20000}
Connecting to localhost/127.0.0.1:41414
[id: 0x52a00770] OPEN
从Flume控制台
2013-10-23 14:32:32,145 (pool-5-thread-1) [INFO - org.apache.avro.ipc.NettyServer$NettyServerAvroHandler.handleUpstream(NettyServer.java:171)] [id: 0x577cf6e4, /127.0.0.1:46037 => /127.0.0.1:41414] OPEN
2013-10-23 14:32:32,148 (pool-6-thread-1) [INFO - org.apache.avro.ipc.NettyServer$NettyServerAvroHandler.handleUpstream(NettyServer.java:171)] [id: 0x577cf6e4, /127.0.0.1:46037 => /127.0.0.1:41414] BOUND: /127.0.0.1:41414
2013-10-23 14:32:32,148 (pool-6-thread-1) [INFO - org.apache.avro.ipc.NettyServer$NettyServerAvroHandler.handleUpstream(NettyServer.java:171)] [id: 0x577cf6e4, /127.0.0.1:46037 => /127.0.0.1:41414] CONNECTED: /127.0.0.1:46037
2013-10-23 14:32:43,086 (pool-6-thread-1) [INFO - org.apache.avro.ipc.NettyServer$NettyServerAvroHandler.handleUpstream(NettyServer.java:171)] [id: 0x577cf6e4, /127.0.0.1:46037 :> /127.0.0.1:41414] DISCONNECTED
2013-10-23 14:32:43,096 (pool-6-thread-1) [INFO - org.apache.avro.ipc.NettyServer$NettyServerAvroHandler.handleUpstream(NettyServer.java:171)] [id: 0x577cf6e4, /127.0.0.1:46037 :> /127.0.0.1:41414] UNBOUND
2013-10-23 14:32:43,096 (pool-6-thread-1) [INFO - org.apache.avro.ipc.NettyServer$NettyServerAvroHandler.handleUpstream(NettyServer.java:171)] [id: 0x577cf6e4, /127.0.0.1:46037 :> /127.0.0.1:41414] CLOSED
2013-10-23 14:32:43,097 (pool-6-thread-1) [INFO - org.apache.avro.ipc.NettyServer$NettyServerAvroHandler.channelClosed(NettyServer.java:209)] Connection to /127.0.0.1:46037 disconnected.
如果有帮助的话,我确实在调试模式下运行了程序,当它挂起时,我执行了挂起并执行堆栈跟踪。试图查看代码,但不知道为什么程序挂起与flume appender。
Daemon Thread [Avro NettyTransceiver I/O Worker 1] (Suspended)
Logger(Category).callAppenders(LoggingEvent) line: 205
Logger(Category).forcedLog(String, Priority, Object, Throwable) line: 391
Logger(Category).log(String, Priority, Object, Throwable) line: 856
Log4jLoggerAdapter.debug(String) line: 209
NettyTransceiver$NettyClientAvroHandler.handleUpstream(ChannelHandlerContext, ChannelEvent) line: 491
DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline$DefaultChannelHandlerContext, ChannelEvent) line: 564
DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(ChannelEvent) line: 792
NettyTransportCodec$NettyFrameDecoder(SimpleChannelUpstreamHandler).channelBound(ChannelHandlerContext, ChannelStateEvent) line: 166
NettyTransportCodec$NettyFrameDecoder(SimpleChannelUpstreamHandler).handleUpstream(ChannelHandlerContext, ChannelEvent) line: 98
DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline$DefaultChannelHandlerContext, ChannelEvent) line: 564
DefaultChannelPipeline.sendUpstream(ChannelEvent) line: 559
Channels.fireChannelBound(Channel, SocketAddress) line: 199
NioWorker$RegisterTask.run() line: 191
NioWorker(AbstractNioWorker).processRegisterTaskQueue() line: 329
NioWorker(AbstractNioWorker).run() line: 235
NioWorker.run() line: 38
DeadLockProofWorker$1.run() line: 42
ThreadPoolExecutor.runWorker(ThreadPoolExecutor$Worker) line: 1145
ThreadPoolExecutor$Worker.run() line: 615
Thread.run() line: 744
这是java程序
import java.io.IOException;
import java.sql.SQLException;
import org.apache.log4j.Logger;
public class log4jExample {
static Logger log = Logger.getRootLogger();
public static void main(String[] args) throws IOException, SQLException {
log.debug("Hello this is an debug message");
}
}
这是log4j属性
# Define the root logger with appender file
log = /home/vm4learning/WorkSpace/BigData/Log4J-Example/log
log4j.rootLogger = DEBUG, FILE, flume
# Define the file appender
log4j.appender.FILE=org.apache.log4j.FileAppender
log4j.appender.FILE.File=${log}/log.out
log4j.appender.FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.FILE.layout.conversionPattern=%m%n
# Define the flume appender
log4j.appender.flume = org.apache.flume.clients.log4jappender.Log4jAppender
log4j.appender.flume.Hostname = localhost
log4j.appender.flume.Port = 41414
log4j.appender.flume.UnsafeMode = false
log4j.appender.flume.layout=org.apache.log4j.PatternLayout
log4j.appender.flume.layout.ConversionPattern=%m%n
以下是eclipse中的依赖项
flume-ng-log4jappender-1.4.0.jar
log4j-1.2.17.jar
flume-ng-sdk-1.4.0.jar
avro-1.7.3.jar
netty-3.4.0.Final.jar
avro-ipc-1.7.3.jar
slf4j-api-1.6.1.jar
slf4j-log4j12-1.6.1.jar
这是flume.conf的内容
# Tell agent1 which ones we want to activate.
agent1.channels = ch1
agent1.sources = avro-source1
agent1.sinks = hdfs-sink1
# Define a memory channel called ch1 on agent1
agent1.channels.ch1.type = memory
# Define an Avro source called avro-source1 on agent1 and tell it
# to bind to 0.0.0.0:41414. Connect it to channel ch1.
agent1.sources.avro-source1.type = avro
agent1.sources.avro-source1.bind = 0.0.0.0
agent1.sources.avro-source1.port = 41414
# Define a logger sink that simply logs all events it receives
# and connect it to the other end of the same channel.
agent1.sinks.hdfs-sink1.type = hdfs
agent1.sinks.hdfs-sink1.hdfs.path = hdfs://localhost:9000/flume/events/
agent1.sinks.hdfs-sink1.channel = ch1
agent1.sources.avro-source1.channels = ch1
如何避开这个问题?
3条答案
按热度按时间pes8fvy91#
我曾经在log4j中使用flume appender时遇到过类似的问题。每当我试图示例化logger对象时,程序就会挂起。我记得问题是类路径中没有所有必需的库,一旦我添加了它们,它就可以正常工作了。
我建议你先从迈克·珀西的简单例子开始。尽管pom.xml创建了一个包含所有依赖项的jar,但编辑它以将依赖jar文件复制到另一个目录给了我以下列表:
其中的一些库(比如junit)可能不是必需的,但是我建议首先使用所有这些库,看看是否可以让示例正常工作,然后再尝试确定所需的最小集合。
ggazkfy82#
我也遇到过类似的问题,解决方法是:
将log4j.properties根记录器从debug更改为info级别。
但我不知道Flume里发生了什么。我正在试着调试它。如果有人知道,告诉我~~
shstlldc3#
我猜你是想通过flume记录flume的事件。我在其他appender中看到过这个问题,但在log4j1中没有。
我会考虑修改log4j.properties以排除flume、netty和avro事件,看看是否可以修复它。