1.6.2

CHANGES:

Changed

• Update for compatibility with mtime.2.0.0, which is now the lower bounds
  (#392, @patricoferris)

1.6.1

CHANGES:

Added

• Support all version of cmdliner (#386)

Fixed

• Make index-bench's bench executable private, avoiding executable
  name collisions in opam-monorepo projects. (#389, @NathanReb)

1.6.0

CHANGES:

Added

• Added a Raw.Header_prefix function, for use by libraries that share the
  file format used by index.unix. (#378)

1.5.0

CHANGES:

Changed

• The benchmarks now use tezos-base58 instead of tezos-context-hash (#367)

• Add an LRU to cache the result of Index.find operations. The default LRU
  capacity is 30_000 entries. (#366)

1.4.2

CHANGES:

Fixed

• Fix stats recording in Raw.unsafe_write (#351)

Changed

• Changed the implementation of the write-ahead log to significantly reduce its
  memory usage (at the cost of some additional disk IO). (#355)

1.3.3

CHANGES:

Fixed

• Attempt to recover from log_async invariant violations during an explicit
  sync operation, rather than failing immediately. (#329)

1.4.1

CHANGES:

Fixed

• Proper cleaning of merge file descriptors when aborting a merge (#326)

• Recover from crash of the merge thread. When this happen, the main thread can
  continue to run and will need to recover from the crash before doing a new
  merge. This fixes a critical issue which might cause data loss (#339)

• Make sure that no entries can disappear for read-only instances during
  log_async recovery (#338)

1.3.2

CHANGES:

Fixed

• Recover from crash of the merge thread. When this happen, the main thread can
  continue to run and will need to recover from the crash before doing a new
  merge. This fixes a critical issue which might cause data loss (#339)

• Make sure that no entries can disappear for read-only instances during
  log_async recovery (#338)

1.4.0

CHANGES:

Fixed

• Fixed a crash-consistency bug due to a potential flush of an incomplete entry
  to disk. Entries are now flushed as complete strings. (#301)

• Fixed a performance issue for Index.sync when there is a blocking merge in
  progress: the log_async file was not cached properly and fully reloaded
  from disk every time. (#310)

• Added fsync after Index.clear to signal more quickly to read-only instances
  than something has changed in the file (#308)

• Attempt to recover from log_async invariant violations during an explicit
  sync operation, rather than failing immediately. (#329)

Changed

• Release overly defensive warnings occuring when pre-fetching the disk. (#322)

• Specialise IO.v to create read-only or read-write instances. (#291)

• Optimised the in-memory representation of index handles and intermediate
  buffers, resulting in a significant reduction in memory use. (#273, #279)

• Benches are now executed 3 times and a new option nb-exec has been added (#292)

• clear removes the files on disks and opens new ones containing only the
  header. (#288)

• Index.Make now requires an implementation of a monotonic time source.
  (#321)

• The Index.Make functor now takes a single Platform argument containing
  all system dependencies (i.e. IO, Clock, Semaphore and Thread). The
  Platform module holds the necessary types for these modules. (#321, #330)

Added

• Added benchmarks that replay a trace of index operations. (#300)

• Log reporter for the benches

1.3.1

CHANGES:

Fixed

• Reduce allocations during merge (#274, #277)

• Protect concurrent syncs with a lock (#309)

• Fixed a performance issue for Index.sync when there is a blocking merge in
  progress: the log_async file was not cached properly and fully reloaded
  from disk every time. (#310)

• Release the merge lock if a merge raises an exception (#312)

• Added fsync after Index.clear to signal more quickly to read-only instances
  than something has changed in the file (#308)

Changed

• Specialise IO.v to create read-only or read-write instances. (#291)

• clear removes the files on disks and opens new ones containing only the
  header. (#288, #307, #317)