hi
I am having an Intermittent non‑fatal IOException: flush() failed: stream is closed is thrown by ModelSerializer.writeModel(...) when saving a ComputationGraph.
Despite the exception, the produced ZIP file is valid and can be successfully reloaded. This creates noisy WARN logs.
Method Call: ModelSerializer.writeModel(graph, targetFile, true, normalizer) inside a background training thread.
Non-fatal issue while saving best model (known flush anomaly?). Attempting fallback.: java.io.IOException: flush() failed: stream is closed
at org.apache.commons.io.output.ClosedOutputStream.flush(ClosedOutputStream.java:62)
at org.apache.commons.io.output.ProxyOutputStream.flush(ProxyOutputStream.java:142)
at java.base/java.util.zip.DeflaterOutputStream.flush(DeflaterOutputStream.java:290)
at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:253)
at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:240)
at java.base/java.io.FilterOutputStream.close(FilterOutputStream.java:184)
at java.base/java.io.FilterOutputStream.close(FilterOutputStream.java:193)
at org.deeplearning4j.util.ModelSerializer.writeModel(ModelSerializer.java:195)
at org.deeplearning4j.util.ModelSerializer.writeModel(ModelSerializer.java:93)
at tng.telementry.thunder.train.ThunderNetwork.saveBestModel(ThunderNetwork.java:622)
at tng.telementry.thunder.train.ThunderNetwork.trainModel(ThunderNetwork.java:588)
at tng.telementry.thunder.train.ThunderNetwork.lambda$networkTrainer$8(ThunderNetwork.java:424)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
at java.base/java.lang.Thread.run(Thread.java:1583)
Suppressed: java.io.IOException: flush() failed: stream is closed
at org.apache.commons.io.output.ClosedOutputStream.flush(ClosedOutputStream.java:62)
at org.apache.commons.io.output.ProxyOutputStream.flush(ProxyOutputStream.java:142)
at java.base/java.util.zip.DeflaterOutputStream.flush(DeflaterOutputStream.java:290)
at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:253)
at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:240)
at java.base/java.io.DataOutputStream.flush(DataOutputStream.java:131)
at java.base/java.io.FilterOutputStream.close(FilterOutputStream.java:184)
... 10 more
hi
I am having an Intermittent non‑fatal IOException: flush() failed: stream is closed is thrown by ModelSerializer.writeModel(...) when saving a ComputationGraph.
Despite the exception, the produced ZIP file is valid and can be successfully reloaded. This creates noisy WARN logs.
Method Call:
ModelSerializer.writeModel(graph, targetFile, true, normalizer)inside a background training thread.