• Sessions:
  • Increase the number of sessions in batches instead of one by one when
    additional sessions are needed. The step size is set to 25, which means
    that whenever the session pool needs at least one more session, it will
    create a batch of 25 sessions.
• Emulator:
  • Run integration tests against the emulator in Kokoro Presubmit.
• RPC retrying:
  • Retry CreateDatabase on retryable codes.
• spannertest:
  • Change internal representation of DATE/TIMESTAMP values.
• spansql:
  • Cleanly parse adjacent comment marker/terminator.
  • Support FROM aliases in SELECT statements.
• Misc:
  • Fix comparing errors in tests.
  • Fix flaky session pool test.
  • Increase timeout in TestIntegration_ReadOnlyTransaction.
  • Fix incorrect instance IDs when deleting instances in tests.
  • Clean up test instances.
  • Clearify docs on Aborted transaction.
  • Fix timeout+staleness bound for test
  • Remove the support for resource-based routing.
  • Fix TestTransaction_SessionNotFound test.