Major Description
Both compress and decompress instantiate GZIP streams, use them, and don't close them. The java util deflate/inflate streams use JNI to leverage zlib, including the allocation of a native, off-heap buffer.
These JNI buffer handles are released when the containing stream is closed. They're also released by the finalize() method on java.util.zip.Inflater/Deflater, but it looks as if the native memory can pile up quickly enough in certain use cases where the JVM is OOM killed before the finalizer does its thing.
Fix is to explicitly close these streams after they're used.
This was discovered in version 2.11.0, but it looks like the problem affects all versions for which GzipCompressionProvider existed.
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