我有一個使用Kafka Logs並將其寫入HDFS的Apache Apex應用程序。AbstractFileOutputWriter生成重複的tmp文件
DAG非常簡單,有一個Kafka Consumer(20分區的2 GB內存用於操作員)通過流連接到「MyWriter extends AbstractFileOutputOperator」。
Issue: 1.我已經看到Writer反覆多次寫入相同大小和相同數據的.tmp文件。我試圖增加寫操作員的內存,增加了作家等的數量。仍然這個問題不斷髮生。
我試着添加/刪除requestFinalize到MyWriter。還是同樣的問題。
@Override
public void endWindow()
{
if (null != fileName) {
requestFinalize(fileName);
}
super.endWindow();
}
這是我properties.xml中的一個子集
<property>
<name>dt.attr.STREAMING_WINDOW_SIZE_MILLIS</name>
<value>1000</value>
</property>
<property>
<name>dt.application.myapp.operator.*.attr.APPLICATION_WINDOW_COUNT</name>
<value>60</value>
</property>
<property>
<name>dt.application.myapp.operator.*.attr.CHECKPOINT_WINDOW_COUNT</name>
<value>60</value>
</property>
<property>
<name>dt.application.myapp.operator.myWriter.attr.PARTITIONER</name>
<value>com.datatorrent.common.partitioner.StatelessPartitioner:20</value>
</property>
<property>
<name>dt.application.myapp.operator.myWriter.prop.maxLength</name>
<value>1000000000</value> <!-- 1 GB File -->
</property>
這是堆棧跟蹤我能夠從dt.log得到了運營商: 運營商獲取不同可能重新部署contianers,拋出這個異常,並不斷寫入重複文件。
java.lang.RuntimeException: java.io.FileNotFoundException: File does not exist: /kafkaconsumetest/inventoryCount/nested/trial2/1471489200000_1471489786800_161.0.1471489802786.tmp
at com.datatorrent.lib.io.fs.AbstractFileOutputOperator.setup(AbstractFileOutputOperator.java:418)
at com.datatorrent.lib.io.fs.AbstractFileOutputOperator.setup(AbstractFileOutputOperator.java:112)
at com.datatorrent.stram.engine.Node.setup(Node.java:187)
at com.datatorrent.stram.engine.StreamingContainer.setupNode(StreamingContainer.java:1309)
at com.datatorrent.stram.engine.StreamingContainer.access$100(StreamingContainer.java:130)
at com.datatorrent.stram.engine.StreamingContainer$2.run(StreamingContainer.java:1388)
Caused by: java.io.FileNotFoundException: File does not exist: /kafkaconsumetest/inventoryCount/nested/trial2/1471489200000_1471489786800_161.0.1471489802786.tmp
at org.apache.hadoop.hdfs.DistributedFileSystem$19.doCall(DistributedFileSystem.java:1219)
at org.apache.hadoop.hdfs.DistributedFileSystem$19.doCall(DistributedFileSystem.java:1211)
at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1211)
at com.datatorrent.lib.io.fs.AbstractFileOutputOperator.setup(AbstractFileOutputOperator.java:411)
... 5 more
2016-08-17 22:17:01,108 INFO com.datatorrent.stram.engine.StreamingContainer: Undeploy request: [161, 177]
2016-08-17 22:17:01,116 INFO com.datatorrent.stram.engine.StreamingContainer: Undeploy complete.
2016-08-17 22:17:02,121 INFO com.datatorrent.stram.engine.StreamingContainer: Waiting for pending request.
2016-08-17 22:17:02,625 INFO com.datatorrent.stram.engine.StreamingContainer: Waiting for pending request.
2016-08-17 22:17:03,129 INFO com.datatorrent.stram.engine.StreamingContainer: Waiting for pending request.