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https://issues.apache.org/jira/browse/FLINK-8679?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16369131#comment-16369131
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ASF GitHub Bot commented on FLINK-8679:
---------------------------------------
Github user StefanRRichter commented on a diff in the pull request:
https://github.com/apache/flink/pull/5518#discussion_r169075007
--- Diff:
flink-contrib/flink-statebackend-rocksdb/src/main/java/org/apache/flink/contrib/streaming/state/RocksDBKeyedStateBackend.java
---
@@ -1991,43 +1999,71 @@ public int numStateEntries() {
return count;
}
+ /**
+ * This class is not thread safety.
+ */
private static class RocksIteratorWrapper<K> implements Iterator<K> {
private final RocksIterator iterator;
private final String state;
private final TypeSerializer<K> keySerializer;
private final int keyGroupPrefixBytes;
+ private final byte[] namespaceBytes;
+ private K nextKey;
public RocksIteratorWrapper(
RocksIterator iterator,
String state,
TypeSerializer<K> keySerializer,
- int keyGroupPrefixBytes) {
+ int keyGroupPrefixBytes,
+ byte[] namespaceBytes) {
this.iterator = Preconditions.checkNotNull(iterator);
this.state = Preconditions.checkNotNull(state);
this.keySerializer =
Preconditions.checkNotNull(keySerializer);
this.keyGroupPrefixBytes =
Preconditions.checkNotNull(keyGroupPrefixBytes);
+ this.namespaceBytes =
Preconditions.checkNotNull(namespaceBytes);
+ this.nextKey = null;
}
@Override
public boolean hasNext() {
- return iterator.isValid();
+ final int namespaceBytesLength = namespaceBytes.length;
+ while (nextKey == null && iterator.isValid()) {
+ try {
+ boolean namespaceValid = true;
+ byte[] key = iterator.key();
+ if (key.length >= namespaceBytesLength
+ keyGroupPrefixBytes) {
--- End diff --
`namespaceBytesLength + keyGroupPrefixBytes` is basically a constant after
the constructor.
> RocksDBKeyedBackend.getKeys(stateName, namespace) doesn't filter data with
> namespace
> ------------------------------------------------------------------------------------
>
> Key: FLINK-8679
> URL: https://issues.apache.org/jira/browse/FLINK-8679
> Project: Flink
> Issue Type: Bug
> Components: State Backends, Checkpointing
> Affects Versions: 1.5.0
> Reporter: Sihua Zhou
> Assignee: Sihua Zhou
> Priority: Blocker
> Fix For: 1.5.0
>
>
> Currently, `RocksDBKeyedBackend.getKeys(stateName, namespace)` is odds. It
> doesn't use the namespace to filter data. And
> `HeapKeyedBackend.getKeys(stateName, namespace)` has done that, I think they
> should be consistent at least.
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