From f5d7a616f6941cdc4867cc8d19f19538bd0e5a4e Mon Sep 17 00:00:00 2001
From: Philip Durbin <philip_durbin@harvard.edu>
Date: Fri, 26 Jun 2020 15:47:57 -0400
Subject: [PATCH] prevent database deadlocks #6846 #6865 #7020

---
 .../command/impl/FinalizeDatasetPublicationCommand.java      | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/main/java/edu/harvard/iq/dataverse/engine/command/impl/FinalizeDatasetPublicationCommand.java b/src/main/java/edu/harvard/iq/dataverse/engine/command/impl/FinalizeDatasetPublicationCommand.java
index ef67a661352..92963c28d51 100644
--- a/src/main/java/edu/harvard/iq/dataverse/engine/command/impl/FinalizeDatasetPublicationCommand.java
+++ b/src/main/java/edu/harvard/iq/dataverse/engine/command/impl/FinalizeDatasetPublicationCommand.java
@@ -187,6 +187,11 @@ public Dataset execute(CommandContext ctxt) throws CommandException {
     
     @Override
     public boolean onSuccess(CommandContext ctxt, Object r) {
+        // This sleep is an attempt to avoid database deadlocks.
+        try {
+            Thread.sleep(3000);
+        } catch (InterruptedException ex) {
+        }
         boolean retVal = true;
         Dataset dataset = null;
         try{