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Ran 04 Dec 2018 03:16PM UTC

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Files 470

Run time 84min

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Build # 289

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push

jenkins

Committed by GitHub

Commit Message

Add max ledger metadata format version to layout

The max ledger metadata format version is the maximum format version
that will be used to write ledger metadata. By setting it in the
ledger layout it becomes a cluster-wide configuration which is
initialized along with the cluster. Any cluster initialized with the
current code will end up with version 2. For this cluster serde will
only ever serialize with up to version 2 of the ledger metadata
format, so all clients that understand version 2 will continue to
work, even as the software version increases and new metadata formats
become available (such as the binary metadata format coming soon).

Currently there is no handling in LedgerMetadataSerDe, because we
don't have a new version, but when there is, it will use
```
Math.min(maxLedgerMetadataFormatVersion,
         metadata.getMetadataFormatVersion())
```
to decide which serialization method to use.


Reviewers: Enrico Olivelli <eolivelli@gmail.com>, Sijie Guo <sijie@apache.org>

This closes #1858 from ivankelly/format-version

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ID	Job ID	Ran	Files	Coverage
1	289.1	04 Dec 2018 03:16PM UTC	0	72.0

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