Handle rare race condition.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/main/java/com/amazon/carbonado/spi/SequenceValueGenerator.java b/src/main/java/com/amazon/carbonado/spi/SequenceValueGenerator.java
index c7bfc78..21b0676 100644
--- a/src/main/java/com/amazon/carbonado/spi/SequenceValueGenerator.java
+++ b/src/main/java/com/amazon/carbonado/spi/SequenceValueGenerator.java
@@ -110,7 +110,9 @@ public class SequenceValueGenerator extends AbstractSequenceValueProducer {
                 mStoredSequence.setInitialValue(initialValue);

                 // Start as small as possible to allow signed long comparisons to work.

                 mStoredSequence.setNextValue(Long.MIN_VALUE);

-                mStoredSequence.insert();

+                if (!mStoredSequence.tryInsert()) {

+                    mStoredSequence.load();

+                }

             }

             txn.commit();

         } finally {