deniskuzZ commented on a change in pull request #1533:
URL: https://github.com/apache/hive/pull/1533#discussion_r497295391
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File path:
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/txn/TxnHandler.java
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@@ -1408,6 +1410,43 @@ private boolean isUpdateOrDelete(Statement stmt, String
conflictSQLSuffix) throw
}
}
+ public long getLatestTxnInConflict(long txnid) throws MetaException {
+ Connection dbConn = null;
+ Statement stmt = null;
+
+ try {
+ dbConn = getDbConn(Connection.TRANSACTION_READ_COMMITTED);
+ stmt = dbConn.createStatement();
+
+ String writeConflictQuery = "SELECT MAX(\"COMMITTED\".\"WS_TXNID\")" +
Review comment:
In most of the cases it will just decrease the performance. It could
only be useful if there is a conflict with already registered in snapshot txn.
Also won't work with dynamic partitioning as we need to recompile and get a
fresh validWriteIdList list.
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