manishmalhotrawork commented on a change in pull request #666:
BaseRewriteManifests should keep different manifest for different partitionSpec
URL: https://github.com/apache/incubator-iceberg/pull/666#discussion_r356365792
##########
File path: core/src/main/java/org/apache/iceberg/BaseRewriteManifests.java
##########
@@ -312,33 +311,58 @@ long getManifestTargetSizeBytes() {
}
class WriterWrapper {
- private ManifestWriter writer;
-
- synchronized void addEntry(ManifestEntry entry) {
- if (writer == null) {
- writer = newWriter();
- } else if (writer.length() >= getManifestTargetSizeBytes()) {
- close();
- writer = newWriter();
+ private final Map<Integer, ManifestWriter> manifestWritersBySpecId =
Collections.synchronizedMap(new HashMap<>());
+
+ synchronized void addEntry(ManifestEntry entry, int partitionSpecId) {
+ ManifestWriter manifestWriter =
manifestWritersBySpecId.get(partitionSpecId);
+ if (manifestWriter == null) {
+ manifestWriter = addAndReturnNewWriter(partitionSpecId);
+ } else if (manifestWriter.length() >= getManifestTargetSizeBytes()) {
+ close(partitionSpecId);
+ manifestWriter = addAndReturnNewWriter(partitionSpecId);
}
- writer.existing(entry);
+ manifestWriter.existing(entry);
}
- private ManifestWriter newWriter() {
- return new ManifestWriter(spec,
manifestPath(manifestSuffix.getAndIncrement()), snapshotId());
+ private ManifestWriter addAndReturnNewWriter(int partitionSpecId) {
Review comment:
@aokolnychyi
I also though so, but if we make two methods, there will be duplicate calls
to both the methods at this place, and also these methods are not being used
from other places.
` if (manifestWriter == null) {
manifestWriter = addAndReturnNewWriter(partitionSpecId);
} else if (manifestWriter.length() >= getManifestTargetSizeBytes()) {
close(partitionSpecId);
manifestWriter = addAndReturnNewWriter(partitionSpecId);
}`
please see, do we still need 2 different methods.
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