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https://issues.apache.org/jira/browse/PHOENIX-6821?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17701238#comment-17701238
]
ASF GitHub Bot commented on PHOENIX-6821:
-----------------------------------------
haridsv commented on code in PR #1570:
URL: https://github.com/apache/phoenix/pull/1570#discussion_r1138899925
##########
phoenix-core/src/main/java/org/apache/phoenix/jdbc/PhoenixStatement.java:
##########
@@ -1993,19 +1992,31 @@ public void clearBatch() throws SQLException {
@Override
public int[] executeBatch() throws SQLException {
int i = 0;
+ int[] returnCodes = new int [batch.size()];
+ Arrays.fill(returnCodes, -1);
+ boolean autoCommit = connection.getAutoCommit();
+ connection.setAutoCommit(false);
try {
- int[] returnCodes = new int [batch.size()];
for (i = 0; i < returnCodes.length; i++) {
PhoenixPreparedStatement statement = batch.get(i);
- returnCodes[i] = statement.execute(true) ?
Statement.SUCCESS_NO_INFO : statement.getUpdateCount();
+ statement.executeForBatch();
+ returnCodes[i] = statement.getUpdateCount();
}
// Flush all changes in batch if auto flush is true
flushIfNecessary();
// If we make it all the way through, clear the batch
clearBatch();
return returnCodes;
- } catch (Throwable t) {
- throw new BatchUpdateExecution(t,i);
+ } catch (SQLException t) {
+ throw new BatchUpdateException(returnCodes, t);
+ } finally {
+ if (autoCommit) {
+ try {
+ connection.commit();
Review Comment:
I have now moved the commit() inside the try block and removed the
propagation of `returnCodes`.
> Batching with auto-commit connections
> -------------------------------------
>
> Key: PHOENIX-6821
> URL: https://issues.apache.org/jira/browse/PHOENIX-6821
> Project: Phoenix
> Issue Type: Improvement
> Reporter: Kadir Ozdemir
> Assignee: Hari Krishna Dara
> Priority: Major
>
> Phoenix commits the commands of a batch individually when executeBatch() is
> called if auto commit is enabled on the connection. For example, if a batch
> of 100 upsert statements is created using addBatch() within an auto-commit
> mode connection then when executeBatch() is called, Phoenix creates 100 HBase
> batches each with a single mutation, i.e., one for each upsert. This defeats
> the purpose of batching. The correct behavior is to commit the entire batch
> of upsert statements using the minimum number of HBase batches. This means if
> the entire batch of upsert statements fits in a single HBase batch, then one
> HBase batch should be used.
> Please note for connections without auto-commit, Phoenix behaves correctly,
> that is, the entire batch of upsert commands is committed using the minimum
> number of HBase batches.
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