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Materialize: Wait for tables to become visible after creation #1320

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Materialize: Wait for tables to become visible after creation #1320

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15 changes: 15 additions & 0 deletions src/sqlancer/materialize/MaterializeGlobalState.java
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Original file line number Diff line number Diff line change
Expand Up @@ -266,6 +266,21 @@ public String getRandomTableAccessMethod() {

@Override
public MaterializeSchema readSchema() throws SQLException {
// Materialize exhibits eventual consistency: a table can appear in
// information_schema.tables before its columns are visible in
// INFORMATION_SCHEMA.COLUMNS. Retry until the snapshot is consistent.
for (int tries = 0; tries < 30; tries++) {
MaterializeSchema schema = MaterializeSchema.fromConnection(getConnection(), getDatabaseName());
if (schema.getDatabaseTables().stream().noneMatch(t -> t.getColumns().isEmpty())) {
return schema;
}
try {
Thread.sleep(100);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
break;
}
}
return MaterializeSchema.fromConnection(getConnection(), getDatabaseName());
}

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