8000 Explicitly close stores during tests. · sailfish009/zarr-python@ea6ec6c · GitHub
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Explicitly close stores during tests.
This is especially troublesome on 32-bit systems with LMDB, as opening an LMDB store maps 2**28 blocks, and letting the gc clean them up can cause excess memory pressure. Eventually, this results in LMDB tests failing to open a store because it can't find a 2**28 block to mmap.
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‎docs/release.rst

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* Improve error message in Jupyter when trying to use the ``ipytree`` widget
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without ``ipytree`` installed.
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By :user:`Zain Patel <mzjp2>; :issue:`537`
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* Explicitly close stores during testing.
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By :user:`Elliott Sales de Andrade <QuLogic>`; :issue:`442`
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.. _release_2.4.0:

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