damccorm commented on code in PR #41069:
URL: https://github.com/apache/beam/pull/41069#discussion_r4512602360
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sdks/java/io/iceberg/src/main/java/org/apache/beam/sdk/io/iceberg/RecordWriterManager.java:
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@@ -345,12 +346,14 @@ private Table loadOrCreateTable(IcebergDestination
destination, Schema dataSchem
// Create namespace if it does not exist yet
if (!namespace.isEmpty() && catalog instanceof SupportsNamespaces) {
SupportsNamespaces supportsNamespaces = (SupportsNamespaces) catalog;
- if (!supportsNamespaces.namespaceExists(namespace)) {
- try {
- supportsNamespaces.createNamespace(namespace);
- LOG.info("Created new namespace '{}'.", namespace);
- } catch (AlreadyExistsException ignored) {
- // race condition: another worker already created this namespace
+ synchronized (NAMESPACE_LOCK) {
Review Comment:
Will this have significant performance implications?
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