maswin commented on issue #104:
URL: https://github.com/apache/iceberg/issues/104#issuecomment-2601106962

   We even see this in `1.4.1` version
   
   ```
   2025-01-14T20:42:05.211Z     WARN    Finalizer       
org.apache.iceberg.hadoop.HadoopStreams Unclosed output stream created by:
        
org.apache.iceberg.hadoop.HadoopStreams$HadoopPositionOutputStream.<init>(HadoopStreams.java:152)
        org.apache.iceberg.hadoop.HadoopStreams.wrap(HadoopStreams.java:66)
        
org.apache.iceberg.hadoop.HadoopOutputFile.createOrOverwrite(HadoopOutputFile.java:85)
        
org.apache.iceberg.avro.AvroFileAppender.<init>(AvroFileAppender.java:56)
        org.apache.iceberg.avro.Avro$WriteBuilder.build(Avro.java:191)
        
org.apache.iceberg.ManifestWriter$V1Writer.newAppender(ManifestWriter.java:315)
        org.apache.iceberg.ManifestWriter.<init>(ManifestWriter.java:58)
        org.apache.iceberg.ManifestWriter.<init>(ManifestWriter.java:34)
        
org.apache.iceberg.ManifestWriter$V1Writer.<init>(ManifestWriter.java:293)
        org.apache.iceberg.ManifestFiles.write(ManifestFiles.java:166)
        
org.apache.iceberg.SnapshotProducer.newManifestWriter(SnapshotProducer.java:529)
        
org.apache.iceberg.MergingSnapshotProducer$DataFileMergeManager.newManifestWriter(MergingSnapshotProducer.java:1082)
        
org.apache.iceberg.ManifestMergeManager.createManifest(ManifestMergeManager.java:171)
        
org.apache.iceberg.ManifestMergeManager.lambda$mergeGroup$1(ManifestMergeManager.java:156)
        org.apache.iceberg.util.Tasks$Builder.runTaskWithRetry(Tasks.java:413)
        org.apache.iceberg.util.Tasks$Builder.access$300(Tasks.java:69)
        org.apache.iceberg.util.Tasks$Builder$1.run(Tasks.java:315)
        
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)
        java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
        
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
        
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
        java.base/java.lang.Thread.run(Thread.java:1583)
   ```
   
   ```
   2025-01-14T20:41:49.408Z     WARN    Finalizer       
org.apache.iceberg.hadoop.HadoopStreams Unclosed input stream created by:
        
org.apache.iceberg.hadoop.HadoopStreams$HadoopSeekableInputStream.<init>(HadoopStreams.java:91)
        org.apache.iceberg.hadoop.HadoopStreams.wrap(HadoopStreams.java:55)
        
org.apache.iceberg.hadoop.HadoopInputFile.newStream(HadoopInputFile.java:183)
        
org.apache.iceberg.avro.AvroIterable.newFileReader(AvroIterable.java:100)
        org.apache.iceberg.avro.AvroIterable.iterator(AvroIterable.java:76)
        
org.apache.iceberg.io.CloseableIterable$7$1.<init>(CloseableIterable.java:188)
        
org.apache.iceberg.io.CloseableIterable$7.iterator(CloseableIterable.java:187)
        
org.apache.iceberg.ManifestMergeManager.createManifest(ManifestMergeManager.java:176)
        
org.apache.iceberg.ManifestMergeManager.lambda$mergeGroup$1(ManifestMergeManager.java:156)
        org.apache.iceberg.util.Tasks$Builder.runTaskWithRetry(Tasks.java:413)
        org.apache.iceberg.util.Tasks$Builder.access$300(Tasks.java:69)
        org.apache.iceberg.util.Tasks$Builder$1.run(Tasks.java:315)
        
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)
        java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
        
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
        
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
        java.base/java.lang.Thread.run(Thread.java:1583)
   ```
   
   


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