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Merge pull request #1390 from ajbeamon/update-release-notes

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Some release notes updates
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A.J. Beamon 2019-04-02 14:46:42 -07:00 committed by GitHub
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@ -8,26 +8,26 @@ Release Notes
Features
--------
* Improved replication mechanism, a new hierarchical replication technique that further significantly reduces the frequency of data loss events even when multiple machines (e.g., fault-tolerant zones in the current code) permanently fail at the same time. `(PR #964) <https://github.com/apple/foundationdb/pull/964>`_.
* Added background actor to remove redundant teams from team collection so that the healthy team number is guaranteed not exceeding the desired number. `(PR #1139) <https://github.com/apple/foundationdb/pull/1139>`_
* Show the number of connected coordinators per client in JSON status `(PR #1222) <https://github.com/apple/foundationdb/pull/1222>`_
* Improved replication mechanism using a new hierarchical technique that significantly reduces the frequency of data loss events even when multiple fault-tolerance zones permanently fail at the same time. After upgrading to 6.1 clusters will experience a low level of background data movement to store data in accordance with the new policy. `(PR #964) <https://github.com/apple/foundationdb/pull/964>`_.
* Added a background actor to remove redundant teams from team collection so that the healthy team number is guaranteed to not exceed the desired number. `(PR #1139) <https://github.com/apple/foundationdb/pull/1139>`_
* Get read version, read, and commit requests are counted and aggregated by server-side latency in configurable latency bands and output in JSON status. `(PR #1084) <https://github.com/apple/foundationdb/pull/1084>`_
* Added configuration option to choose log spilling implementation `(PR #1160) <https://github.com/apple/foundationdb/pull/1160>`_
* Added configuration option to choose log system implementation `(PR #1160) <https://github.com/apple/foundationdb/pull/1160>`_
* Batch priority transactions are now limited separately by ratekeeper and will be throttled at lower levels of cluster saturation. This makes it possible to run a more intense background load at saturation without significantly affecting normal priority transactions. It is still recommended not to run excessive loads at batch priority. `(PR #1198) <https://github.com/apple/foundationdb/pull/1198>`_
* Restore now requires the destination cluster to be specified explicitly to avoid confusion. `(PR #1240) <https://github.com/apple/foundationdb/pull/1240>`_
* Restore target version can now be specified by timestamp if the original cluster is available. `(PR #1240) <https://github.com/apple/foundationdb/pull/1240>`_
* Backup status and describe commands now have a --json output option. `(PR #1248) <https://github.com/apple/foundationdb/pull/1248>`_
* Separate data distribution out from master as a new role. `(PR #1062) <https://github.com/apple/foundationdb/pull/1062>`_
* Separate rate keeper out from data distribution as a new role. `(PR ##1176) <https://github.com/apple/foundationdb/pull/1176>`_
* Added a new atomic op ``CompareAndClear``. `(PR #1105) <https://github.com/apple/foundationdb/pull/1105>`_
* Restore now accepts a timestamp that can be used to determine the restore version if the original cluster is available. `(PR #1240) <https://github.com/apple/foundationdb/pull/1240>`_
* Backup ``status`` and ``describe`` commands now have a ``--json`` output option. `(PR #1248) <https://github.com/apple/foundationdb/pull/1248>`_
* Separated data distribution from the master into its own role. `(PR #1062) <https://github.com/apple/foundationdb/pull/1062>`_
* Separated ratekeeper from the master into its own role. `(PR #1176) <https://github.com/apple/foundationdb/pull/1176>`_
* Added a ``CompareAndClear`` atomic op that clears a key if its value matches the supplied value. `(PR #1105) <https://github.com/apple/foundationdb/pull/1105>`_
* Added support for IPv6. `(PR #1176) <https://github.com/apple/foundationdb/pull/1178>`_
* FDB can now simultaneously listen to TLS and unencrypted ports to facilitate smoother migration to TLS. `(PR #1157) <https://github.com/apple/foundationdb/pull/1157>`_
* FDB can now simultaneously listen to TLS and unencrypted ports to facilitate smoother migration to and from TLS. `(PR #1157) <https://github.com/apple/foundationdb/pull/1157>`_
* Added ``DISABLE_POSIX_KERNEL_AIO`` knob to fallback to libeio instead of kernel async I/O (KAIO) for systems that do not support KAIO or O_DIRECT flag. `(PR #1283) <https://github.com/apple/foundationdb/pull/1283>`_
* Added support for a config where the primary and remote DC's can be used as satellites. `(PR #1320) <https://github.com/apple/foundationdb/pull/1320>`_
* Added support for configuring the cluster to use the primary and remote DC's as satellites. `(PR #1320) <https://github.com/apple/foundationdb/pull/1320>`_
* Added support for restoring multiple key ranges in a single restore job. `(PR #1190) <https://github.com/apple/foundationdb/pull/1190>`_
* Deprecated transaction option ``TRANSACTION_LOGGING_ENABLE``. Added two new transaction options ``DEBUG_TRANSACTION_IDENTIFIER`` and ``LOG_TRANSACTION`` that sets an identifier for the transaction and logs the transaction to the trace file respectively. `(PR #1200) <https://github.com/apple/foundationdb/pull/1200>`_
* Clients can now specify default transaction timeouts and retry limits to all transactions through a database option. `(Issue #775) <https://github.com/apple/foundationdb/issues/775>`_
* Clients can now specify default transaction timeouts and retry limits for all transactions through a database option. `(Issue #775) <https://github.com/apple/foundationdb/issues/775>`_
* The "timeout", "max retry delay", and "retry limit" transaction options are no longer reset when the transaction is reset after a call to ``onError`` (as of API version 610). `(Issue #775) <https://github.com/apple/foundationdb/issues/775>`_
* Added the ``force_recovery_with_data_loss`` command to fdbcli. When a cluster is configured with usable_regions=2, this command will force the database to recover in the remote region. `(PR #1168) <https://github.com/apple/foundationdb/pull/1168>`_
* Added a limit to the number of status requests the cluster controller will handle. `(PR #1093) <https://github.com/apple/foundationdb/pull/1093>`_ (submitted by tclinken)
@ -68,6 +68,7 @@ Fixes
Status
------
* Report the number of connected coordinators for each client. This aids in monitoring client TLS support when enabling TLS on a live cluster. `(PR #1222) <https://github.com/apple/foundationdb/pull/1222>`_
* Degraded processes are reported in ``status json``. `(Issue #690) <https://github.com/apple/foundationdb/issues/690>`_
Bindings
@ -93,8 +94,8 @@ Bindings
* Flow: Added ``ReadTransaction`` interface that allows only read operations on a transaction. The ``Transaction`` interface inherits from ``ReadTransaction`` and can be used when a ``ReadTransaction`` is required. `(PR #1215) <https://github.com/apple/foundationdb/pull/1215>`_
* Flow: Changed ``Transaction::setVersion`` to ``Transaction::setReadVersion``. `(PR #1215) <https://github.com/apple/foundationdb/pull/1215>`_
* Flow: On update to this version of the Flow bindings, client code will fail to build due to the changes in the API, irrespective of the API version used. Client code must be updated to use the new bindings API. These changes affect the bindings only and won't impact compatibility with different versions of the cluster. `(PR #1215) <https://github.com/apple/foundationdb/pull/1215>`_
* Golang: Added ``fdb.Printable`` to print a human-readable string for a given byte array. Add ``Key.String()``, which converts the ``Key`` to a ``string`` using the ``Printable`` function. `(PR #1010) <https://github.com/apple/foundationdb/pull/1010>`_
* Golang: Tuples now support ``Versionstamp`` operations. `(PR #1187) <https://github.com/apple/foundationdb/pull/1187>`_
* Golang: Added ``fdb.Printable`` to print a human-readable string for a given byte array. Add ``Key.String()``, which converts the ``Key`` to a ``string`` using the ``Printable`` function. `(PR #1010) <https://github.com/apple/foundationdb/pull/1010>`_ (submitted by pjvds)
* Golang: Tuples now support ``Versionstamp`` operations. `(PR #1187) <https://github.com/apple/foundationdb/pull/1187>`_ (submitted by ryanworl)
* Python: Python signal handling didn't work when waiting on a future. In particular, pressing Ctrl-C would not successfully interrupt the program. `(PR #1138) <https://github.com/apple/foundationdb/pull/1138>`_
Other Changes