pbacsko opened a new pull request #3411:
URL: https://github.com/apache/hadoop/pull/3411
…6951.
Change-Id: I628380b6d29a2796d9d67bd38b423cdb1830bf04
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### Description of PR
HADOOP-16951 introduced a performance regression to Text.append(). The
backing array is not increased as intended, which resulted in a lot of
unnecessary new arrays.
### How was this patch tested?
Tried the change on a cluster, where a mapper successfully read a large text
file (1.1GB) without slowing down.
Executed unit tests, which all passed.
### For code changes:
- [x] Does the title or this PR starts with the corresponding JIRA issue id
(e.g. 'HADOOP-17799. Your PR title ...')?
- [ ] Object storage: have the integration tests been executed and the
endpoint declared according to the connector-specific documentation?
- [ ] If adding new dependencies to the code, are these dependencies
licensed in a way that is compatible for inclusion under [ASF
2.0](http://www.apache.org/legal/resolved.html#category-a)?
- [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`,
`NOTICE-binary` files?
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