sixtus edited a comment on issue #8840: index_hadoop tasks fail on wrong file format when run inside indexer URL: https://github.com/apache/incubator-druid/issues/8840#issuecomment-553123020 ``` 11:33:28.944 [main] ERROR org.apache.druid.indexer.JobHelper - Exception in retry loop java.lang.IllegalArgumentException: Pathname /druid/indexer/foo/2019-11-12T04:00:00.000Z_2019-11-12T05:00:00.000Z/2019-11-12T10:04:03.778Z/0/index.zip.0 from hdfs://us2/druid/indexer/foo/2019-11-12T04:00:00.000Z_2019-11-12T05:00:00.000Z/2019-11-12T10:04:03.778Z/0/index.zip.0 is not a valid DFS filename. at org.apache.hadoop.hdfs.DistributedFileSystem.getPathName(DistributedFileSystem.java:217) ~[hadoop-hdfs-client-2.8.5.jar:?] at org.apache.hadoop.hdfs.DistributedFileSystem$8.doCall(DistributedFileSystem.java:476) ~[hadoop-hdfs-client-2.8.5.jar:?] at org.apache.hadoop.hdfs.DistributedFileSystem$8.doCall(DistributedFileSystem.java:473) ~[hadoop-hdfs-client-2.8.5.jar:?] at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81) ~[hadoop-common-2.8.5.jar:?] at org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:473) ~[hadoop-hdfs-client-2.8.5.jar:?] at org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:414) ~[hadoop-hdfs-client-2.8.5.jar:?] at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:929) ~[hadoop-common-2.8.5.jar:?] at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:890) ~[hadoop-common-2.8.5.jar:?] at org.apache.druid.indexer.JobHelper$2.push(JobHelper.java:452) [druid-indexing-hadoop-0.16.0-lqm1.jar:0.16.0-lqm1] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_222] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_222] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_222] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_222] at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:409) [hadoop-common-2.8.5.jar:?] at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeMethod(RetryInvocationHandler.java:163) [hadoop-common-2.8.5.jar:?] at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invoke(RetryInvocationHandler.java:155) [hadoop-common-2.8.5.jar:?] at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeOnce(RetryInvocationHandler.java:95) [hadoop-common-2.8.5.jar:?] at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:346) [hadoop-common-2.8.5.jar:?] at com.sun.proxy.$Proxy78.push(Unknown Source) [?:?] at org.apache.druid.indexer.JobHelper.serializeOutIndex(JobHelper.java:469) [druid-indexing-hadoop-0.16.0-lqm1.jar:0.16.0-lqm1] at org.apache.druid.indexer.IndexGeneratorJob$IndexGeneratorReducer.reduce(IndexGeneratorJob.java:827) [druid-indexing-hadoop-0.16.0-lqm1.jar:0.16.0-lqm1] at org.apache.druid.indexer.IndexGeneratorJob$IndexGeneratorReducer.reduce(IndexGeneratorJob.java:579) [druid-indexing-hadoop-0.16.0-lqm1.jar:0.16.0-lqm1] at org.apache.hadoop.mapreduce.Reducer.run(Reducer.java:171) [hadoop-mapreduce-client-core-2.8.5.jar:?] at org.apache.hadoop.mapred.ReduceTask.runNewReducer(ReduceTask.java:627) [hadoop-mapreduce-client-core-2.8.5.jar:?] at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:389) [hadoop-mapreduce-client-core-2.8.5.jar:?] at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:175) [hadoop-mapreduce-client-app-2.8.5.jar:?] at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_222] at javax.security.auth.Subject.doAs(Subject.java:422) [?:1.8.0_222] at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1844) [hadoop-common-2.8.5.jar:?] at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:169) [hadoop-mapreduce-client-app-2.8.5.jar:?] ``` we upgraded to 2.8.5 right around the same time as druid 0.16
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