andreachild commented on code in PR #3163:
URL: https://github.com/apache/tinkerpop/pull/3163#discussion_r2229510927
##########
tinkergraph-gremlin/src/test/java/org/apache/tinkerpop/gremlin/tinkergraph/structure/TinkerTransactionGraphTest.java:
##########
@@ -1705,6 +1706,92 @@ public void
shouldPreventDropUpdateVertexInConcurrentTransactions() {
verifyCommittedSingleVertex(g, "updated");
}
}
+
+ @Test
+ public void
readVertexShouldNotConflictWithDropAddUpdateVertexInSeparateTransaction()
throws InterruptedException {
+ final TinkerTransactionGraph graph = TinkerTransactionGraph.open();
+ final GraphTraversalSource g = graph.traversal();
+ final GraphTraversalSource gtx = g.tx().begin();
+ final int vertexId = 1;
+
+ // commit the initial vertex
+ gtx.addV().property(T.id, vertexId).next();
+ gtx.tx().commit();
+
+ // reader thread which is constantly reading the vertex ids in a
separate transaction
+ CountDownLatch signal = new CountDownLatch(1);
+ Thread reader = new Thread(() -> {
+ while (signal.getCount() > 0) {
+ g.V().id().toList();
Review Comment:
Added verification to check expected vertex ids (empty or single value of
vertexId), same for the edge test.
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