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Potential fix for rare HSQLDB "serialization failure" in Transaction.importAsUnconfirmed()

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catbref 2020-05-20 07:33:21 +01:00
parent 219f82f562
commit 9c48343581
1 changed files with 10 additions and 0 deletions
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10
src/main/java/org/qortal/transaction/Transaction.java
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@ -782,6 +782,16 @@ public abstract class Transaction {
if (validationResult != ValidationResult.OK) if (validationResult != ValidationResult.OK)
return validationResult; return validationResult;
/*
* We call discardChanges() to restart repository 'transaction', discarding any
* transactional table locks, hence reducing possibility of deadlock or
* "serialization failure" with HSQLDB due to reads.
*
* We should be OK to proceed after validation check as we're protected by
* BLOCKCHAIN_LOCK so no other thread will be writing the same transaction.
*/
repository.discardChanges();
repository.getTransactionRepository().save(transactionData); repository.getTransactionRepository().save(transactionData);
repository.getTransactionRepository().unconfirmTransaction(transactionData); repository.getTransactionRepository().unconfirmTransaction(transactionData);
repository.saveChanges(); repository.saveChanges();