gerlowskija opened a new pull request #2250:
URL: https://github.com/apache/lucene-solr/pull/2250
# Description
This PR introduces a new way for Solr to do backups (with a new
underlying file structure). This new "incremental" backup process
improves over the existing backup mechanism in several ways:
- multiple backups "points" can now be stored at a given backup
location/name, allowing users to choose which point in time they want
to restore
- subsequent backups skip over uploading files that were uploaded by
previous backups, saving time and network time.
- files are checksummed as they're uploaded, ensuring that corrupted
indices aren't persisted and accidentally restored later.
This PR is the first piece of SIP-12 - see the proposal for more context.
# Tests
Manual testing. New unit tests. New "integration" tests in
HdfsCloudIncrementalBackupTest, LocalFSCloudIncrementalBackupTest, and
HdfsBackupRepositoryIntegrationTest.
# Checklist
Please review the following and check all that apply:
- [x] I have reviewed the guidelines for [How to
Contribute](https://wiki.apache.org/solr/HowToContribute) and my code conforms
to the standards described there to the best of my ability.
- [x] I have created a Jira issue and added the issue ID to my pull request
title.
- [x] I have given Solr maintainers
[access](https://help.github.com/en/articles/allowing-changes-to-a-pull-request-branch-created-from-a-fork)
to contribute to my PR branch. (optional but recommended)
- [x] I have developed this patch against the `master` branch.
- [ ] I have run `./gradlew check`.
- [x] I have added tests for my changes.
- [ ] I have added documentation for the [Ref
Guide](https://github.com/apache/lucene-solr/tree/master/solr/solr-ref-guide)
(for Solr changes only).
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