/**
* Regression test for KUDU-1226. Calls to session.flush() concurrent with AUTO_FLUSH_BACKGROUND
* can end up giving ConvertBatchToListOfResponsesCB a list with nulls if a tablet was already
* flushed. Only happens with multiple tablets.
*/
@Test(timeout = 10000)
public void testConcurrentFlushes() throws Exception {
String tableName = TABLE_NAME_PREFIX + "-testConcurrentFlushes";
CreateTableOptions builder = new CreateTableOptions();
int numTablets = 4;
int numRowsPerTablet = 100;
// Create a 4 tablets table split on 1000, 2000, and 3000.
for (int i = 1; i < numTablets; i++) {
PartialRow split = basicSchema.newPartialRow();
split.addInt(0, i * numRowsPerTablet);
builder.addSplitRow(split);
}
table = createTable(tableName, basicSchema, builder);
// Configure the session to background flush as often as it can (every 1ms).
KuduSession session = syncClient.newSession();
session.setFlushMode(SessionConfiguration.FlushMode.AUTO_FLUSH_BACKGROUND);
session.setFlushInterval(1);
// Fill each tablet in parallel 1 by 1 then flush. Without the fix this would quickly get an
// NPE.
for (int i = 0; i < numRowsPerTablet; i++) {
for (int j = 0; j < numTablets; j++) {
session.apply(createInsert(i + (numRowsPerTablet * j)));
}
session.flush();
}
}
@Test(timeout = 100000)
public void testBatchWithSameRow() throws Exception {
String tableName = TABLE_NAME_PREFIX + "-testBatchWithSameRow";
table = createTable(tableName, basicSchema, new CreateTableOptions());
KuduSession session = syncClient.newSession();
session.setFlushMode(SessionConfiguration.FlushMode.MANUAL_FLUSH);
// Insert 25 rows, one per batch, along with 50 updates for each, and a delete at the end,
// while also clearing the cache between each batch half the time. The delete is added here
// so that a misplaced update would fail if it happens later than its delete.
for (int i = 0; i < 25; i++) {
session.apply(createInsert(i));
for (int j = 0; j < 50; j++) {
Update update = table.newUpdate();
PartialRow row = update.getRow();
row.addInt(basicSchema.getColumnByIndex(0).getName(), i);
row.addInt(basicSchema.getColumnByIndex(1).getName(), 1000);
session.apply(update);
}
Delete del = table.newDelete();
PartialRow row = del.getRow();
row.addInt(basicSchema.getColumnByIndex(0).getName(), i);
session.apply(del);
session.flush();
if (i % 2 == 0) {
client.emptyTabletsCacheForTable(table.getTableId());
}
}
assertEquals(0, countRowsInScan(client.newScannerBuilder(table).build()));
}
@Test(timeout = 10000)
public void testOverWritingValues() throws Exception {
String tableName = TABLE_NAME_PREFIX + "-OverridingValues";
table = createTable(tableName, basicSchema, null);
KuduSession session = syncClient.newSession();
Insert insert = createInsert(0);
PartialRow row = insert.getRow();
// Overwrite all the normal columns.
int magicNumber = 9999;
row.addInt(1, magicNumber);
row.addInt(2, magicNumber);
row.addBoolean(4, false);
// Spam the string column since it's backed by an array.
for (int i = 0; i <= magicNumber; i++) {
row.addString(3, i + "");
}
// We're supposed to keep a constant size.
assertEquals(5, row.getVarLengthData().size());
session.apply(insert);
KuduScanner scanner = syncClient.newScannerBuilder(table).build();
RowResult rr = scanner.nextRows().next();
assertEquals(magicNumber, rr.getInt(1));
assertEquals(magicNumber, rr.getInt(2));
assertEquals(magicNumber + "", rr.getString(3));
assertEquals(false, rr.getBoolean(4));
// Test setting a value post-apply.
try {
row.addInt(1, 0);
fail("Row should be frozen and throw");
} catch (IllegalStateException ex) {
// Ok.
}
}
@Test(timeout = 100000)
public void testBasicOps() throws Exception {
String tableName = TABLE_NAME_PREFIX + "-testBasicOps";
table = createTable(tableName, basicSchema, new CreateTableOptions());
KuduSession session = syncClient.newSession();
for (int i = 0; i < 10; i++) {
session.apply(createInsert(i));
}
assertEquals(10, countRowsInScan(client.newScannerBuilder(table).build()));
OperationResponse resp = session.apply(createInsert(0));
assertTrue(resp.hasRowError());
session.setFlushMode(SessionConfiguration.FlushMode.MANUAL_FLUSH);
for (int i = 10; i < 20; i++) {
session.apply(createInsert(i));
}
session.flush();
assertEquals(20, countRowsInScan(client.newScannerBuilder(table).build()));
}