Fix copy large files #8409
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Fix copy large files #8409
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joschi
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Hi @joschi, thanks for the PR. What I had in mind for the issue is checking if copy file is supported to do an async operation and then implement it in docker-java and use it in Testcontainers. |
This is an attempt to fix `OutOfMemoryError` (out of heap memory) when copying large files into a container via `GenericContainer#withCopyFileToContainer()`. The previous implementation relied on an in-memory array backing a `ByteArrayInputStream` which represents the tar archive sent to the Docker daemon which is limited by the available heap memory of the JVM at the moment of execution. By using the local disk (temporary directory), we can copy files into the container which are larger than the available heap memory of the JVM. The caveat being that we are now limited by the available disk space in the temporary directory of the machine running Testcontainers. Fixes testcontainers#4203
eddumelendez
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Thanks for your contribution, @joschi ! PR has been updated to stream the files instead of use local disk. |
This was referenced Jul 4, 2024
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Fixing #7239 is amazing. Thank you so much! |
lizhou1111
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Jul 13, 2024
Fix `OutOfMemoryError` (out of heap memory) when copying large files into a container via `GenericContainer#withCopyFileToContainer()`. Fixes testcontainers#4203 --------- Co-authored-by: Eddú Meléndez <eddu.melendez@gmail.com>
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This is an attempt to fix
OutOfMemoryError(out of heap memory) when copying large files into a container viaGenericContainer#withCopyFileToContainer().The previous implementation relied on an in-memory array backing a
ByteArrayInputStreamwhich represents the tar archive sent to the Docker daemon which is limited by the available heap memory of the JVM at the moment of execution.By using the local disk (temporary directory), we can copy files into the container which are larger than the available heap memory of the JVM. The caveat being that we are now limited by the available disk space in the temporary directory of the machine running Testcontainers.
Maybe it could be useful to perform this conditionally depending on the size of the transferables or configurable via runtime property.
What do you think?
Fixes #4203