Warning:
This version of CockroachDB is no longer supported. Cockroach Labs supports the current stable release and two releases prior. Please use one of these supported versions.

Aug 3, 2017

Get future release notes emailed to you:

Downloads

Backwards-Incompatible Changes

  • Table and column names in double quotes are now case-sensitive (same as in PostgreSQL). #16884
  • The SHOW SESSION TRACE statement is now SHOW TRACE FOR SESSION. The SET/SHOW TRACE statements are now SET/SHOW TRACING. #17033
  • It is no longer possible to drop columns in tables depended on by views. This is an overly-broad change to avoid schema changes that might break views; it will be narrowed in the future. #17280

Build Changes

  • It is now possible to build CockroachDB Enterprise Edition for Windows. #17035
  • make help in a source checkout now prints documentation for the available build targets. #17056
  • CockroachDB now uses gRPC version 1.5.0. #17166

SQL Language Changes

  • New statement CANCEL QUERY can be used to cancel a query in progress. #17003
  • A limited form of one-dimensional ARRAY columns are now supported. #16764 #17231
  • OUTER JOIN statements now use the distributed SQL execution engine. #17017
  • Some new syntactic forms for table references with aliases are now supported. #17031
  • Strings within arrays are now formatted consistently with PostgreSQL. #17069
  • Transactions can now see their own changes to table schemas. #16988
  • RETURNING clauses now accept fully-qualified table names. #17293
  • Improved handling of null as a function argument. #17264

Command-Line Interface Changes

  • A new cockroach init command can be used in place of starting one node without the --join flag. #16371

Bug Fixes

  • We removed a behavior causing statements in the first batch of a transaction to essentially defer their retryable errors until COMMIT; now, instead, we automatically retry statements in the first batch. As a result, fewer retryable errors should be encountered by COMMIT. #16874
  • Fixed a race condition that could lead to serializability violations when requests race with a lease transfer. #17109
  • Fixed a potential raft election issue during range splits. #17051
  • Fixed a use-after-close for parallelized statements. #17126
  • Fixed some panics in ORDER BY INDEX. #17314

Performance Improvements

  • The TRUNCATE statement now works by renaming the table and asynchronously garbage collecting the data, so it is much faster but no longer transactional (similar to PostgreSQL). #17045
  • Fixed a memory leak in the HTTP layer. #17080
  • Raft log truncations are now more efficient. #16993
  • Fixed a regression that caused a node to talk to itself over the network. #17196
  • Improved networking efficiency when tracing is disabled. #17185
  • Reduced redundant trace messages. #17182
  • Added a fast path for committing read-only transactions. #17128
  • Memory footprints of various internal structures have been reduced. #17089 #17106 #17138 #17137 #17152
  • Table descriptors are now passed by reference instead of value. #17100

Doc Updates

  • New RFCs: web session authentication (#16829), buffering hash router (#17105
  • Corrected information about how TIMESTAMP WITH TIME ZONE works. Previous versions incorrectly said that they stored timestamps; they do not. Instead they simply display timestamps in the client's session time zone.
  • CockroachDB in Comparison was redesigned.

Enterprise Edition Changes

  • Replayed commands during a RESTORE are now more efficient. #17079
  • Backup jobs now checkpoint their progress every minutes. #17070
  • Streamlined concurrency of RESTORE operations, removing most tunable constants. #17163
  • RESTORE now rate-limits its disk I/O, reducing its impact on other traffic and improving performance on cloud platforms that throttle disk access. #17239
  • The enterprise.enabled setting has been removed. #17224


Yes No