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Dgraph v1.0.15
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@danielmai danielmai released this 31 May 00:05
· 2960 commits to master since this release
v1.0.15
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danielmai Daniel Mai
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Learn about vigilant mode.
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Learn about vigilant mode.

Fixed

  • Fix bug that can cause a Dgraph cluster to get stuck in infinite leader election. (#3391)
  • Fix bug in bulk loader that prevented loading data from JSON files. (#3464)
  • Fix bug with a potential deadlock by breaking circular lock acquisition. (#3393)
  • Properly escape strings containing Unicode control characters for data exports. Fixes #3383. (#3429)
  • Initialize tablets map when creating a group. (#3360)
  • Fix queries with offset not working with multiple orderasc or orderdesc statements. Fixes #3366. (#3455)
  • Vendor in bug fixes from badger. (#3348, #3371, #3460)

Changed

  • Use Go v1.12.5 to build Dgraph release binaries.
  • Truncate Raft logs even when no txn commits are happening. (3be380b)
  • Reduce memory usage by setting a limit on the size of committed entries that can be served per Ready. (#3308)
  • Reduce memory usage of pending txns by only keeping deltas in memory. (#3349)
  • Reduce memory usage by limiting the number of pending proposals in apply channel. (#3340)
  • Reduce memory usage when calculating snapshots by retrieving entries in batches. (#3409)
  • Allow snapshot calculations during snapshot streaming. (ecb4547)
  • Allow quick recovery from partitions by shortening the deadline of sending Raft messages to 10s. (77b52ac)
  • Take snapshots less frequently so straggling Alpha followers can catch up to the leader. Snapshot frequency is configurable via a flag (see Added section). (#3367)
  • Allow partial snapshot streams to reduce the amount of data needed to be transferred between Alphas. (#3454)
  • Use Badger's StreamWriter to improve write speeds during snapshot streaming. (#3457) (#3442)
  • Call file sync explicitly at the end of TxnWriter to improve performance. (#3418)
  • Optimize mutation and delta application. (#2987)
  • Add logs to show Dgraph config options. (#3337)
  • Add -v=3 logs for reporting Raft communication for debugging. These logs start with RaftComm:. (9cd628f)

Added

  • Add Alpha flag --snapshot_after (default: 10000) to configure the number of Raft entries to keep before taking a snapshot. (#3367)
  • Add Alpha flag --abort_older_than (default: 5m) to configure the amount of time since a pending txn's last mutation until it is aborted. (#3367)
  • Add Alpha flag --normalize_node_limit (default: 10000) to configure the limit for the maximum number of nodes that can be returned in a query that uses the @normalize directive. Fixes #3335. (#3467)
  • Add Prometheus metrics for latest Raft applied index (dgraph_raft_applied_index) and the max assigned txn timestamp (dgraph_max_assigned_ts). These are useful to track cluster progress. (#3338)
  • Add Raft checkpoint index to WAL for quicker recovery after restart. (#3444)

Removed

  • Remove size calculation in posting list. (0716dc4)
  • Remove a -v=2 log which can be too noisy during Raft replay. (2377d9f).
  • Remove dgraph_conf from /debug/vars. Dgraph config options are available via logs. (#3337)
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