Details
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Bug
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Status: Closed
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Major
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Resolution: Duplicate
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1.4
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None
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None
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Apple Inc. Java HotSpot(TM) 64-Bit Server VM 1.6.0_17; Mac OS X 10.5.8 (x86_64)
Description
A custom reported a problem, wherein our product was catching and logging many IOExceptions. Upon examining the logs I see:
java.io.IOException: Attempted read on closed stream.
at org.apache.commons.httpclient.AutoCloseInputStream.isReadAllowed(AutoCloseInputStream.java:183)
at org.apache.commons.httpclient.AutoCloseInputStream.read(AutoCloseInputStream.java:107)
at java.io.FilterInputStream.read(FilterInputStream.java:116)
at com.acme.DocPusher$BigEmptyDocumentFilterInputStream.read(DocPusher.java:679)
at com.acme.CompressedFilterInputStream.fillbuff(CompressedFilterInputStream.java:96)
at com.acme.CompressedFilterInputStream.read(CompressedFilterInputStream.java:67)
at com.acme.Base64FilterInputStream.fillbuff(Base64FilterInputStream.java:138)
at com.acme.Base64FilterInputStream.read(Base64FilterInputStream.java:115)
at java.io.FilterInputStream.read(FilterInputStream.java:116)
at com.acme.DocPusher$AlternateContentFilterInputStream.read(DocPusher.java:609)
...
As you can see, this is a pipeline consisting of multiple FilterInputStream segments that process data flowing through the pipeline. The source of the data is in InputStream provided by a third party plug-in component. In our customer's situation, that InputStream is a AutoCloseInputStream returned by a Sharepoint API call.
When I saw the "Attempted read on closed stream.", I was incredulous; "Reading from a closed stream - that's a rookie mistake." However, when examining the JavaDoc for AutoCloseInputStream, I read: [emphasis mine]
"Proxy stream that closes and discards the underlying stream as soon as the end of input has been reached or when the stream is explicitly closed."
Attachments
Issue Links
- is duplicated by
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- Closed
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