Question

我正在开发HDP（Hortonworks）并试图通过水槽收集推文并从Hive加载存储的数据。

问题是select * from tweetsavro limit 1;有效但select * from tweetsavro limit 2;不起作用，因为

Failed with exception java.io.IOException:org.apache.avro.AvroRuntimeException: java.io.IOException: Block size invalid or too large for this implementation: -40

我所做的是用this answer写的。即

twitter.conf

TwitterAgent.sources = Twitter 
TwitterAgent.channels = MemChannel 
TwitterAgent.sinks = HDFS

TwitterAgent.sources.Twitter.type = org.apache.flume.source.twitter.TwitterSource
TwitterAgent.sources.Twitter.consumerKey = xxx
TwitterAgent.sources.Twitter.consumerSecret = xxx
TwitterAgent.sources.Twitter.accessToken = xxx
TwitterAgent.sources.Twitter.accessTokenSecret = xxx

TwitterAgent.sinks.HDFS.type = hdfs 
TwitterAgent.sinks.HDFS.hdfs.path = hdfs://sandbox.hortonworks.com:8020/user/flume/twitter_data/
TwitterAgent.sinks.HDFS.hdfs.fileType = DataStream 
TwitterAgent.sinks.HDFS.hdfs.writeFormat = Text
TwitterAgent.sinks.HDFS.hdfs.batchSize = 1000
TwitterAgent.sinks.HDFS.hdfs.rollSize = 0 
TwitterAgent.sinks.HDFS.hdfs.rollCount = 10000
TwitterAgent.sinks.HDFS.serializer = Text

TwitterAgent.channels.MemChannel.type = memory 
TwitterAgent.channels.MemChannel.capacity = 10000 
TwitterAgent.channels.MemChannel.transactionCapacity = 1000

TwitterAgent.sources.Twitter.channels = MemChannel
TwitterAgent.sinks.HDFS.channel = MemChannel

twitter.avsc由以下命令创建。

java -jar avro-tools-1.7.7.jar getschema FlumeData.1503479843633 > twitter.avsc

我通过

创建了一个表

CREATE TABLE tweetsavro
  ROW FORMAT SERDE
     'org.apache.hadoop.hive.serde2.avro.AvroSerDe'
  STORED AS INPUTFORMAT
     'org.apache.hadoop.hive.ql.io.avro.AvroContainerInputFormat'
  OUTPUTFORMAT
     'org.apache.hadoop.hive.ql.io.avro.AvroContainerOutputFormat'
  TBLPROPERTIES ('avro.schema.url'='hdfs://sandbox.hortonworks.com:8020/user/flume/twitter.avsc') ;
LOAD DATA INPATH 'hdfs://sandbox.hortonworks.com:8020/user/flume/twitter_data/FlumeData.*' OVERWRITE INTO TABLE tweetsavro;

说明：

我尝试了一个外部表（而不是托管表）。但情况没有改变。
因为我使用的是Hortonworks，所以我不使用Cloudera的TwitterSource。

无法加载Avro格式的推文数据

0 个答案: