JDK-6223075 : java.util.zip stream classes do not close default {De,In}flaters
  • Type: Bug
  • Component: core-libs
  • Sub-Component: java.util.jar
  • Affected Version: 1.3.1
  • Priority: P3
  • Status: Resolved
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2005-01-28
  • Updated: 2010-04-02
  • Resolved: 2005-04-04
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Other
1.3.1_16 b01Fixed
Related Reports
Relates :  
JDK-5072161 - OutOfMemoryError while using GZIPOutputStream
Relates :  
JDK-4499542 - Fix for Bug 4475540 forces us to construct a new Deflater everytime
Description
The fix for 4499542 was backported from 1.4 to 1.3.1_04, but the backport was
incomplete.  The usesDefaultDeflater field is never set, so the close() method
never invokes the underlying deflater's end() method.  This causes native
memory to be retained until the deflater is finalized.  Since finalization is
never guaranteed, native OutOfMemoryErrors can occur under heavy load.

This bug only exists in 1.3.1.

###@###.### 2005-1-28 20:22:26 GMT
Comments
EVALUATION This bug is also present in the {GZIP,Zip}{In,Out}putStream constructors, which also need to set the (package-private) usesDefault{De,In}flater fields in the parent {De,In}flaterOutputStream classes. This part of this bug was fixed in 1.4.1 as 4622045, but that fix was never backported to 1.3.1. In the case of GZIPOutputStream, this bug may be the root cause of 5072161. ###@###.### 2005-2-07 04:51:13 GMT
07-02-2005
SUGGESTED FIX --- /tmp/scdiff.LN2aDh/IR6TXg 2002-03-20 20:39:36.000000000 -0800 +++ src/share/classes/java/util/zip/DeflaterOutputStream.java 2005-01-23 12:31:29.000000000 -0800 @@ -68,6 +68,7 @@ */ public DeflaterOutputStream(OutputStream out) { this(out, new Deflater()); + usesDefaultDeflater = true; } ###@###.### 2005-1-28 20:22:26 GMT
28-01-2005