GitHub user mpollmeier opened a pull request: https://github.com/apache/tinkerpop/pull/745
TINKERPOP-1830: fix race condition in TinkerIndex My colleage @fabsx00 discovered a race condition in tinkergraph's index creation. He fixed it by simply replacing `parallelStream` with `stream`. Quoting his analysis: > So, reading the code, you see that this.put is called in parallel, but that method seems to contain a race as get is called on the index, checked for null, and a subsequent write is performed. It still seems like using stream here fixes the problem we've been seeing, and the performance hit is not significant. Ticket: https://issues.apache.org/jira/browse/TINKERPOP-1830 After initial feedback I can backport this onto tp32. You can merge this pull request into a Git repository by running: $ git pull https://github.com/mpollmeier/tinkerpop mp/1830-tinkergraph-index-race-condition Alternatively you can review and apply these changes as the patch at: https://github.com/apache/tinkerpop/pull/745.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #745 ---- commit ca5aa798093b58833bf54d7a495a0928bca41555 Author: Fabian Yamaguchi <f...@shiftleft.io> Date: 2017-10-27T16:43:15Z patch for TinkerIndex ---- ---