GitHub user ijuma opened a pull request:
https://github.com/apache/kafka/pull/83
KAFKA-1595; Remove deprecated and slower scala JSON parser
Tested that we only use Jackson methods introduced in 2.0 in the main
codebase by compiling it with the older version locally. We use a constructor
introduced in 2.4 in one test, but I didn't remove it as it seemed harmless.
The reasoning for this is explained in the mailing list thread:
http://search-hadoop.com/m/uyzND1FWbWw1qUbWe
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ijuma/kafka
kafka-1595-remove-deprecated-json-parser-jackson
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/83.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #83
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commit c4af0bccc7b7bb04b4ccd3499a73d7dd1edaaa65
Author: Ismael Juma <ism...@juma.me.uk>
Date: 2015-07-17T10:43:22Z
Update to JUnit 4.12.
It includes `assertNotEquals`, which is used in a subsequent
commit.
commit 19033ed3a974a7e35f97ddb35463d6a0a24eab71
Author: Ismael Juma <ism...@juma.me.uk>
Date: 2015-07-17T11:03:00Z
Introduce `testJsonParse`
Simple test that shows existing behaviour.
commit 08ea63deebe88a77f4c54f01eac8cdcda8bb1b01
Author: Ismael Juma <ism...@juma.me.uk>
Date: 2015-07-17T11:05:00Z
KAFKA-1595; Remove deprecated and slower scala JSON parser from
kafka.consumer.TopicCount
A thin wrapper over Jackson's Tree Model API is used as the replacement.
This wrapper
increases safety while providing a simple, but powerful API through the
usage of the
`DecodeJson` type class. Even though this has a maintenance cost, it makes
the API
much more convenient from Scala. A number of tests were added to verify the
behaviour of this wrapper.
The Scala module for Jackson doesn't provide any help for our current
usage, so we don't
depend on it.
An attempt has been made to maintain the existing behaviour regarding when
exceptions
are thrown. There are a number of cases where `JsonMappingException` will
be thrown
instead of `ClassCastException`, however. It is expected that users would
not try to catch
`ClassCastException`.
commit 8cfdec90a2d0c5bbb156512e92fa2cb3ff714d0d
Author: Ismael Juma <ism...@juma.me.uk>
Date: 2015-07-17T11:06:00Z
Minor clean-ups in `Json.encode`
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