我们正在努力处理从Kafka到由Flume管理的HDFS的数据流。 由于下面描述的例外情况,数据未完全传输到hdfs。 但是这个错误对我们来说看起来有些误导,我们在数据目录和hdfs中都有足够的空间。我们认为这可能是通道配置的问题,但我们对于其他来源具有类似的配置,并且对于它们来说工作正常。如果有人不得不处理这个问题,我会很感激提示。当数据从卡夫卡流向HDFS时,Flume没有足够的空间错误
17 Aug 2017 14:15:24,335 ERROR [Log-BackgroundWorker-channel1] (org.apache.flume.channel.file.Log$BackgroundWorker.run:1204) - Error doing checkpoint
java.io.IOException: Usable space exhausted, only 0 bytes remaining, required 524288000 bytes
at org.apache.flume.channel.file.Log.writeCheckpoint(Log.java:1003)
at org.apache.flume.channel.file.Log.writeCheckpoint(Log.java:986)
at org.apache.flume.channel.file.Log.access$200(Log.java:75)
at org.apache.flume.channel.file.Log$BackgroundWorker.run(Log.java:1201)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
17 Aug 2017 14:15:27,552 ERROR [PollableSourceRunner-KafkaSource-kafkaSource] (org.apache.flume.source.kafka.KafkaSource.doProcess:305) - KafkaSource EXCEPTION, {}
org.apache.flume.ChannelException: Commit failed due to IO error [channel=channel1]
at org.apache.flume.channel.file.FileChannel$FileBackedTransaction.doRollback(FileChannel.java:639)
at org.apache.flume.channel.BasicTransactionSemantics.rollback(BasicTransactionSemantics.java:168)
at org.apache.flume.channel.ChannelProcessor.processEventBatch(ChannelProcessor.java:194)
at org.apache.flume.source.kafka.KafkaSource.doProcess(KafkaSource.java:286)
at org.apache.flume.source.AbstractPollableSource.process(AbstractPollableSource.java:58)
at org.apache.flume.source.PollableSourceRunner$PollingRunner.run(PollableSourceRunner.java:137)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.IOException: Usable space exhausted, only 0 bytes remaining, required 524288026 bytes
at org.apache.flume.channel.file.Log.rollback(Log.java:722)
at org.apache.flume.channel.file.FileChannel$FileBackedTransaction.doRollback(FileChannel.java:637)
... 6 more
水槽配置:
agent2.sources = kafkaSource
#sources defined
agent2.sources.kafkaSource.type = org.apache.flume.source.kafka.KafkaSource
agent2.sources.kafkaSource.kafka.bootstrap.servers = …
agent2.sources.kafkaSource.kafka.topics = pega-campaign-response
agent2.sources.kafkaSource.channels = channel1
# channels defined
agent2.channels = channel1
agent2.channels.channel1.type = file
agent2.channels.channel1.checkpointDir = /data/cloudera/.flume/filechannel/checkpointdirs/pega
agent2.channels.channel1.dataDirs = /data/cloudera/.flume/filechannel/datadirs/pega
agent2.channels.channel1.capacity = 10000
agent2.channels.channel1.transactionCapacity = 10000
#hdfs sinks
agent2.sinks = sink
agent2.sinks.sink.type = hdfs
agent2.sinks.sink.hdfs.fileType = DataStream
agent2.sinks.sink.hdfs.path = hdfs://bigdata-cls:8020/stage/data/pega/campaign-response/%d%m%Y
agent2.sinks.sink.hdfs.batchSize = 1000
agent2.sinks.sink.hdfs.rollCount = 0
agent2.sinks.sink.hdfs.rollSize = 0
agent2.sinks.sink.hdfs.rollInterval = 120
agent2.sinks.sink.hdfs.useLocalTimeStamp = true
agent2.sinks.sink.hdfs.filePrefix = pega-
DF -h命令:
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/rhel-root 26G 6.8G 18G 28%/
devtmpfs 126G 0 126G 0% /dev
tmpfs 126G 6.3M 126G 1% /dev/shm
tmpfs 126G 2.9G 123G 3% /run
tmpfs 126G 0 126G 0% /sys/fs/cgroup
/dev/sda1 477M 133M 315M 30% /boot
tmpfs 26G 0 26G 0% /run/user/0
cm_processes 126G 1.9G 124G 2% /run/cloudera-scm-agent/process
/dev/scinib 2.0T 53G 1.9T 3% /data
tmpfs 26G 20K 26G 1% /run/user/2000
如果您使用Kafka或Memory通道,该怎么办? –