large Sftp transfers fail with OutOfMemoryError: Java heap space
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Key: VFS-107
URL: https://issues.apache.org/jira/browse/VFS-107
Project: Commons VFS
Issue Type: Bug
Affects Versions: Nightly Builds
Environment: java version "1.5.0_04"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_04-b05)
Java HotSpot(TM) Client VM (build 1.5.0_04-b05, mixed mode, sharing)
Linux version 2.6.17-1.2142_FC4 ([EMAIL PROTECTED]) (gcc version 4.0.2 20051125
(Red Hat 4.0.2-8)) #1 Tue Jul 11 22:41:14 EDT 2006
Reporter: Marty Lamb
Calling SftpFileObject.getOutputStream() returns a descendant of
ByteArrayOutputStream; nothing is written to the remote sftp server until the
OutputStream is closed. For large data transfers, this exhausts local
resources.
This is noted in the source for SftpFileObject:
protected OutputStream doGetOutputStream(boolean bAppend) throws
Exception
{
// TODO - Don't write the entire file into memory. Use the
stream-based
// methods on ChannelSftp once the work properly
final ChannelSftp channel = fileSystem.getChannel();
return new SftpOutputStream(channel);
}
although it is not clear what "once the[y] work properly" is referring to.
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