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src/plasma/fling.cc and src/plasma/fling.h: Apache 2.0

Copyright 2013 Sharvil Nanavati

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src/plasma/thirdparty/xxhash: BSD 2-Clause License

xxHash - Fast Hash algorithm
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This project includes code from Daniel Lemire's FrameOfReference project.

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Copyright: 2013 Daniel Lemire
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https://github.com/numpy/numpy/blob/68fd82271b9ea5a9e50d4e761061dfcca851382a/numpy/core/src/multiarray/datetime.c

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Copyright 2014 Google Inc.

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The script dev/docker_common/wait-for-it.sh has the following license

Copyright (c) 2016 Giles Hall

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Copyright (c) 2017, Jeroen Ooms and Jim Hester

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cpp/src/arrow/util/logging.cc, cpp/src/arrow/util/logging.h and
cpp/src/arrow/util/logging-test.cc are adapted from
Ray Project (https://github.com/ray-project/ray) (Apache 2.0).

Copyright (c) 2016 Ray Project (https://github.com/ray-project/ray)

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The file cpp/src/gandiva/precompiled/date.h has the following license (MIT)

The MIT License (MIT)
Copyright (c) 2015, 2016, 2017 Howard Hinnant
Copyright (c) 2016 Adrian Colomitchi
Copyright (c) 2017 Florian Dang
Copyright (c) 2017 Paul Thompson
Copyright (c) 2018 Tomasz Kamiński

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