(Working in Progress)

Table of Contents

Because of that, we should throw different exceptions for each type.

Proposed Changes

There are add four new exceptions:

...

KafkaStreams
- stores()
ReadOnlyKeyValueStore(CompositeReadOnlyKeyValueStore)
- get(k)
- range(from, to)
- all()
- approximateNumEntries()
ReadOnlySessionStore(CompositeReadOnlySessionStore)
- fetch(k)
- fetch(from, to)
ReadOnlyWindowStore(CompositeReadOnlyWindowStore)
- fetch(k, rf, tt)
- fetch(from, to, rf, tt)
- all()
- fetchAll()
KeyValueIterator(DelegatingPeekingKeyValueIterator)
- next()
- hasNext()
- peekNextKey()

During user call one of above methods, we should check KafkaStreams state by the following rule when InvalidStateStoreException is thrown:

If state is RUNNING or REBALANCING
- StateStoreClosedException: should be wrapped to StateStoreRetriableException
- StateStoreMigratedException: should not be wrapped, directly thrown
if state is PENDING_SHUTDOW or ERROR or NOT_RUNNING
- wrap InvalidStateStoreException to StateStoreFailException

Call Trace

Expand

title	Call trace 1: KafkaStreams#store()

KafkaStreams#store() (v)
- QueryableStoreProvider#getStore() (v)
  - GlobalStateStoreProvider#stores() (v)
  - StreamThreadStateStroeProvider#stores() (v)

Expand

title	Call trace 2: ReadOnlyKeyValueStore#get()

CompositeReadOnlyKeyValueStore#get() (v)
- WrappingStoreProvider#stores() (v)
  - StreamThreadStateStoreProvider#stores() (v)
- MeteredKeyValueBytesStore#get()
  - InnerMeteredKeyValueStore#get()
    - CachingKeyValueStore#get()
      - AbstractStateStore#validateStoreOpen() (v)
        RocksDBStore#isOpen()
    - CachingKeyValueStore#getInternal()
      - ChangeLoggingKeyValueBytesStore#get()
        RocksDBStore#get()
        RocksDBStore#validateStoreOpen() (v)
        RocksDBStore#getInternal()

Expand

title	Call trace 3: ReadOnlyKeyValueStore#range()

CompositeReadOnlyKeyValueStore#range() (v)
- WrappingStoreProvider#stores() (v)
  - StreamThreadStateStoreProvider#stores() (v)
- return new DelegatingPeekingKeyValueIterator<>()
DelegatingPeekingKeyValueIterator#hasNext() (v)
- CompositKeyValueIterator#hasNext()
  - NextIteratorFunction#apply() (v)
    - MeteredKeyValueBytesStore#range()
      - InnerMeteredKeyValueStore#range()
        CachingKeyValueStore#range()
        AbstractStateStore#validateStoreOpen() (v)
        ChangeLoggingKeyValueBytesStore#range()
        RocksDBStore#range()
        RocksDBStore#validateStoreOpen() (v)
        return new RocksDBRangeIterator()
        return new MergedSortedCacheKeyValueBytesStoreIterator()
        return new MeteredKeyValueIterator()
      - return
    - return
  - return
- CompositKeyValueIterator#next()
  - MeteredKeyValueIterator#next()
    - MergedSortedCacheKeyValueBytesStoreIterator#next()
      AbstractMergedSortedCacheStoreIterator#next()

- - - - RocksDBRangeIterator#hasNext()
        RocksDBIterator#hasNext() (v)
        RocksIterator#isValid()
      - AbstractMergedStortedCacheStoreIterator#nextSrtoreValue()
        RocksDBRangeIterator#next()
        RocksDBIterator#next()
        RocksDbIterator#hasNext() (v)
        RocksDbIterator#getKeyValue()
        RocksIterator#next()
        return keyvalue entry
        return
      - return
    - return outerkeyvalue
  - return
- return
DelegatingPeekingKeyValueIterator#next()
- return keyvalue

WindowStoreIterator(MeteredWindowStoreIterator)
- next()
- hasNext()
- peekNextKey()

Code Block

language	java

public class KafkaStreams {
    public <T> T store(final String storeName, final QueryableStoreType<T> queryableStoreType);
}
 
public class CompositeReadOnlyKeyValueStore<K, V> implements ReadOnlyKeyValueStore<K, V> {
    public V get(final K key);
    public KeyValueIterator<K, V> range(final K from, final K to);
    public KeyValueIterator<K, V> all();
    public long approximateNumEntries();
}
 
public class CompositeReadOnlySessionStore<K, V> implements ReadOnlySessionStore<K, V> {
    public KeyValueIterator<Windowed<K>, V> fetch(final K key);
    public KeyValueIterator<Windowed<K>, V> fetch(final K from, final K to);
}
 
public class CompositeReadOnlyWindowStore<K, V> implements ReadOnlyWindowStore<K, V> {
    public WindowStoreIterator<V> fetch(final K key, final long timeFrom, final long timeTo);
    public KeyValueIterator<Windowed<K>, V> fetch(final K from, final K to, final long timeFrom, final long timeTo);
    public KeyValueIterator<Windowed<K>, V> all();
    public KeyValueIterator<Windowed<K>, V> fetchAll(final long timeFrom, final long timeTo);
}
 
class DelegatingPeekingKeyValueIterator<K, V> implements KeyValueIterator<K, V>, PeekingKeyValueIterator<K, V> {
    public synchronized boolean hasNext();
    public synchronized KeyValue<K, V> next();
    public KeyValue<K, V> peekNext();
}
 
class MeteredWindowStoreIterator<V> implements WindowStoreIterator<V> {
    public boolean hasNext();
    public KeyValue<Long, V> next();
    public Long peekNextKey()
}

During user call one of above methods, we should check KafkaStreams state by the following rule when InvalidStateStoreException is thrown:

If state is RUNNING or REBALANCING:
- StateStoreClosedException: should be wrapped to StateStoreRetriableException
- StateStoreMigratedException: should not be wrapped, directly thrown
if state is PENDING_SHUTDOW or ERROR or NOT_RUNNING:
- wrap InvalidStateStoreException to StateStoreFailException

Call Trace

Expand

title	Call trace 1: KafkaStreams#store()

KafkaStreams#store() (v)
- QueryableStoreProvider#getStore() (v)
  - GlobalStateStoreProvider#stores() (v)
  - StreamThreadStateStroeProvider#stores() (v)

Expand

title	Call trace 2: ReadOnlyKeyValueStore#get()

CompositeReadOnlyKeyValueStore#get() (v)
- WrappingStoreProvider#stores() (v)
  - StreamThreadStateStoreProvider#stores() (v)
- MeteredKeyValueBytesStore#get()
  - InnerMeteredKeyValueStore#get()
    - CachingKeyValueStore#get()
      - AbstractStateStore#validateStoreOpen() (v)
        RocksDBStore#isOpen()
    - CachingKeyValueStore#getInternal()
      - ChangeLoggingKeyValueBytesStore#get()
        RocksDBStore#get()
        RocksDBStore#validateStoreOpen() (v)
        RocksDBStore#getInternal()

Expand

title	Call trace 3: ReadOnlyKeyValueStore#range()

CompositeReadOnlyKeyValueStore#range() (v)
- WrappingStoreProvider#stores() (v)
  - StreamThreadStateStoreProvider#stores() (v)
- return new DelegatingPeekingKeyValueIterator<>()
DelegatingPeekingKeyValueIterator#hasNext() (v)
- CompositKeyValueIterator#hasNext()
  - NextIteratorFunction#apply() (v)
    - MeteredKeyValueBytesStore#range()
      - InnerMeteredKeyValueStore#range()
        CachingKeyValueStore#range()
        AbstractStateStore#validateStoreOpen() (v)
        ChangeLoggingKeyValueBytesStore#range()
        RocksDBStore#range()
        RocksDBStore#validateStoreOpen

Expand

title	Call trace 4: ReadOnlyKeyValueStore#all()

CompositeReadOnlyKeyValueStore#all() (v)
- WrappingStoreProvider#stores() (v)
  - StreamThreadStateStoreProvider#stores
    - - () (v)
        return new
  DelegatingPeekingKeyValueIterator<>
  - - - RocksDBRangeIterator()
DelegatingPeekingKeyValueIterator#hasNext
- - - - return new MergedSortedCacheKeyValueBytesStoreIterator()
        return new MeteredKeyValueIterator(
v
- - - - )
- - - - return
    - return
  - return
- CompositKeyValueIterator#nextCompositKeyValueIterator#hasNext()
  - NextIteratorFunction#applyMeteredKeyValueIterator#next()
    - MergedSortedCacheKeyValueBytesStoreIterator#next(
    v
    - )
      MeteredKeyValueBytesStore#allAbstractMergedSortedCacheStoreIterator#next()InnerMeteredKeyValueStore#all

- - - - RocksDBRangeIterator#hasNext()

CachingKeyValueStore#all

- - - - RocksDBIterator#hasNext() (v)
- - - - RocksIterator#isValid()
        AbstractMergedStortedCacheStoreIterator#nextSrtoreValue(
- - - - )
  - - - RocksDBRangeIterator#next()
  - - - RocksDBIterator#next()
    - - RocksDbIterator#hasNext() (v)
    - - RocksDbIterator#getKeyValue()
        RocksIterator#next()
        return keyvalue entry
        return
    - - return
    - - return outerkeyvalue
        return
      - return
    - CompositKeyValueIterator#nextDelegatingPeekingKeyValueIterator#next()MeteredKeyValueIterator#next()
      MergedSortedCacheKeyValueBytesStoreIterator#next
      - return keyvalue

Call trace 6: ReadOnlySessionStore#fetch(key

Expand

title	Call trace 4: ReadOnlyKeyValueStore#all()

AbstractMergedSortedCacheStoreIterator#nextCompositeReadOnlyKeyValueStore#all() MemoryLRUCacheBytesIterator.hasNext(v)
- DelegatingPeekingKeyValueIterator.hasNextWrappingStoreProvider#stores() (v)
  - AbstractMergedSortedCacheStoreIterator#nextStoreValueStreamThreadStateStoreProvider#stores() (v)DelegatingPeekingKeyValueIterator#next
- return new DelegatingPeekingKeyValueIterator<>()
DelegatingPeekingKeyValueIterator#hasNext() (v)
- return
- return
- return outerkeyvalue
- return
- return
DelegatingPeekingKeyValueIterator#next()
- return keyvalue

Expand

title	Call trace 5: ReadOnlyKeyValueStore#approximateNumEntries()

title

- CompositKeyValueIterator#hasNext()
  - NextIteratorFunction#apply() (v)
    - MeteredKeyValueBytesStore#all()
      - InnerMeteredKeyValueStore#all()
        CachingKeyValueStore#all()
        AbstractStateStore#validateStoreOpen
CompositeReadOnlyKeyValueStore#approximateNumEntries() (v)
- WrappingStoreProvider#stores() (v)
  - StreamThreadStateStoreProvider#stores
    - - () (v)
    MeteredKeyValueBytesStore#approximateNumEntries
    - - ChangeLoggingKeyValueBytesStore#all()
        InnerMeteredKeyValueStore#approximateNumEntries
        RocksDBStore#all()
        CachingKeyValueStore#approximateNumEntries
        AbstractStateStore#validateStoreOpen
        RocksDBStore#validateStoreOpen()
        (
        ) (
        v)
        RocksDBStore#isOpen
        return new RocksDBIterator()
        RocksDBStore#approximateNumEntries
        return
        return new MergedSortedCacheKeyValueBytesStoreIterator()
        RocksDBStore#validateStoreOpenreturn new MeteredKeyValueIterator() (v)
        return value
        return
        return
        return
      - return total

Expand

- CompositKeyValueIterator#next()
  CompositeReadOnlySessionStore#fetch
  - - MeteredKeyValueIterator#next(
  key
  - - )
      - MergedSortedCacheKeyValueBytesStoreIterator#next(
  v
  - - - )
    WrappingStoreProvider#stores
    - - AbstractMergedSortedCacheStoreIterator#next()
        MemoryLRUCacheBytesIterator.hasNext(
    v
    - - )
      StreamThreadStateStoreProvider#stores
      - DelegatingPeekingKeyValueIterator.hasNext() (v)
    MeteredSessionStore#fetch
    - - AbstractMergedSortedCacheStoreIterator#nextStoreValue(
    key
    - - )
        MeteredSessionStore#findSessions
        DelegatingPeekingKeyValueIterator#next()
        CachingSessionStore#findSessions
        AbstractStateStore#validateStoreOpen()
        DelegatingPeekingKeyValueIterator#hasNext()
        (v)
        ChangeLoggingSessionBytesStore#findSessions()RocksDBSessionStore.findSessions(k)RocksDBSessionStore.findSessions(from, to)RocksDBSegmentedBytesStore#fetch()SessionKeySchema#segmentsToSearch()Segments#segments
        return
        return
        return outerkeyvalue
        return
      - return
    - DelegatingPeekingKeyValueIterator#next()
      - return keyvalue

Expand

title	Call trace 5: ReadOnlyKeyValueStore#approximateNumEntries()

CompositeReadOnlyKeyValueStore#approximateNumEntries() (v)
- Segments#getSegmentWrappingStoreProvider#stores() ConcurrentHashMap#get(v)
  - Segments#isSegmentStreamThreadStateStoreProvider#stores()
  - return segment
  - retiurn segments
  - return
  - return new SegmentIterator()
  - return new WrappedSessionStoreIterator()
  - return
  - return
  - return new MergedSortedCacheSessionStoreIterator()
  - return new MeteredWindowedKeyValueIterator()
  - return
  - (v)
- MeteredKeyValueBytesStore#approximateNumEntries()
  - InnerMeteredKeyValueStore#approximateNumEntries()
    - CachingKeyValueStore#approximateNumEntries()
      - AbstractStateStore#validateStoreOpen() (v)
        RocksDBStore#isOpen()
      - RocksDBStore#approximateNumEntries()
        RocksDBStore#validateStoreOpen() (v)
        return value
  MeteredWindowedKeyValueIterator#hasNext()
  - MergedSortedCacheSessionStoreIterator#hasNext()
    AbstraceMergedSortedCacheStoreIterator#hasNext()
    - FilteredCacheIterator#hasNext()
    - WrappedSessionStoreIterator#hasNext()
      - SegmentIterator#hasNext()
        Segment.range(from, to)
        RocksDBStore.range(from, to)
        RocksDBStore.validateStoreOpen() (v)
        return new RocksDBRangeIterator()
      - return
    - return
  - return
- return iterator(MeteredWindowedKeyValueIteratortotal

Expand

title	Call trace 6: ReadOnlySessionStore#fetch(key)

MeteredWindowedKeyValueIterator#nextCompositeReadOnlySessionStore#fetch(key) MergedSortedCacheSessionStoreIterator#next (v)
- AbstractMergedSortedCacheStoreIterator#nextWrappingStoreProvider#stores() AbstractMergedSortedCacheStoreIterator#hasNext (v)
  - FilteredCacheIterator#hasNextStreamThreadStateStoreProvider#stores() WrappedSessionStoreIterator#hasNext (v)SegmentIterator#hasNext
- MeteredSessionStore#fetch(key)
  - Segment.range(from, toMeteredSessionStore#findSessions()
    - RocksDBStore.range(from, toCachingSessionStore#findSessions()
      - RocksDBStore.AbstractStateStore#validateStoreOpen() (v)
      - return new RocksDBRangeIteratorChangeLoggingSessionBytesStore#findSessions()
        return
      - return
      MergedSortedCacheSessionStoreIterator#
      - RocksDBSessionStore.findSessions(k)
        RocksDBSessionStore.findSessions(from, to)
        RocksDBSegmentedBytesStore#fetch
      nextStoreValue()
      AbstractMergedSortedCacheStoreIterator#nextStoreValue
      - ()
        WrappedSessionStoreIterator#next
        SessionKeySchema#segmentsToSearch()
        SegmentIterator#next
        RocksDBRangeIterator#next
        Segments#segments()
        (v)
        RocksDbIterator#next
        Segments#getSegment()
        RocksDbIterator#getKeyValue
        ConcurrentHashMap#get()
        RocksIterator#next
        Segments#isSegment()
        return
        entry
        segment
        retiurn segments
        return
        return new SegmentIterator()
        return new WrappedSessionStoreIterator()
        return
        return

Expand

title	Call trace 7: ReadOnlySessionStore#fetch(from, to)

- - - - return new MergedSortedCacheSessionStoreIterator()
    - return new MeteredWindowedKeyValueIterator()
  - return
- MeteredWindowedKeyValueIterator#hasNext()
  - MergedSortedCacheSessionStoreIterator#hasNext()
    AbstraceMergedSortedCacheStoreIterator#hasNext()
    - FilteredCacheIterator#hasNext()
    - WrappedSessionStoreIterator#hasNext()
      - SegmentIterator#hasNext()
        Segment.range(from, to)
        RocksDBStore.range(from, to)
        RocksDBStore.validateStoreOpen
CompositeReadOnlySessionStore#fetch(from, to) (v)
- WrappingStoreProvider#stores() (v)
  - StreamThreadStateStoreProvider#stores
    - - () (v)
        return new
  DelegatingPeekingKeyValueIterator<>
  - - - RocksDBRangeIterator()
  - - - return
      - return
    - return
  - return iterator(MeteredWindowedKeyValueIterator)
MeteredWindowedKeyValueIterator#next()
- MergedSortedCacheSessionStoreIterator#next
DelegatingPeekingKeyValueIterator#hasNext() (v)
- CompositKeyValueIterator#hasNext()
  NextIteratorFunction#applyAbstractMergedSortedCacheStoreIterator#next(store)
  - MeteredSessionStore#fetchAbstractMergedSortedCacheStoreIterator#hasNext(from, to)MeteredSessionStore#findSession
  - (from, to, 0, tFilteredCacheIterator#hasNext()CachingSessionStore#findSession(from,
  - to, 0, tWrappedSessionStoreIterator#hasNext()
    - CachingSessionStore#validStoreOpenSegmentIterator#hasNext()
      - Segment.range(from, to)
        RocksDBStore.range(from, to)
        RocksDBStore.validateStoreOpen() (v)
        return new RocksDBRangeIteratorAbstractStateStore#validStoreOpen() (v)
        ChangeLoggingSessionBytesStore#isOpen()RocksDBSessionStore#isOpen()
        AbstractStateStore#isOpen()
        RocksDBSegmentedBytesStore#isOpen()
      - return
    - return
    - return
  - MergedSortedCacheSessionStoreIterator#nextStoreValue()
    RocksDBSessionStore#findSessionsAbstractMergedSortedCacheStoreIterator#nextStoreValue()
    - RocksDBSegmentedBytesStore#fetchWrappedSessionStoreIterator#next()
      - SessionKeySchema#segmentsToSearchSegmentIterator#next()
        Segments#segmentsRocksDBRangeIterator#next()
        RocksDbIterator#next(v)
        RocksDBStore#isOpenRocksDbIterator#getKeyValue()
        return new SegmentIteratorRocksIterator#next()
        return new WrappedSessionStoreIterator()entry
        return
      - return
    - return
  - return new MergedSortedCacheSessionStoreIterator()
- return MeteredWindowedKeyValueIterator()
- return
- return
- MeteredWindowedKeyValueIterator#hasNext()
  - MergedSortedCacheSessionStoreIterator#hasNext()
    AbstractMergedSortedCacheStoreIterator#hasNext()
    - FilteredCacheIterator#hasNext()
    - WrappedSessionStoreIterator#hasNext()
      - SegmentIterator#hasNext()
        Segment.range(from, to)
        RocksDBStore.range(from, to)

RocksDBStore.validateStoreOpen

Expand

title	Call trace 7: ReadOnlySessionStore#fetch(from, to)

CompositeReadOnlySessionStore#fetch(from, to) (v)
- WrappingStoreProvider#stores() (v)
  - StreamThreadStateStoreProvider#stores() (v)
- return new DelegatingPeekingKeyValueIterator<>()
DelegatingPeekingKeyValueIterator#hasNext() (v)
- - CompositKeyValueIterator#hasNext()
  - return
  - return
  - return
  - return
  - return
  - CompositeKeyValueIterator#next()
  - return
  - - - NextIteratorFunction#apply(store)
        MeteredSessionStore#fetch(from, to)
        MeteredSessionStore#findSession(from, to, 0, t)
        CachingSessionStore#findSession(from, to, 0, t)
        CachingSessionStore#validStoreOpen()
        AbstractStateStore#validStoreOpen() (v)
        ChangeLoggingSessionBytesStore#isOpen()
        RocksDBSessionStore#isOpen()
        AbstractStateStore#isOpen()
        RocksDBSegmentedBytesStore#isOpen()
        return

...

- - - - return

Changed Classes

...

language	java

...

- - - - return
        ChangeLoggingSessionBytesStore#findSesisons()
        RocksDBSessionStore#findSessions()
        RocksDBSegmentedBytesStore#fetch()
        SessionKeySchema#segmentsToSearch()
        Segments#segments() (v)
        RocksDBStore#isOpen()
        return new SegmentIterator()
        return new WrappedSessionStoreIterator()
        return
        return
        return new MergedSortedCacheSessionStoreIterator()
        return MeteredWindowedKeyValueIterator()
      - return
    - return
  - MeteredWindowedKeyValueIterator#hasNext()
    - MergedSortedCacheSessionStoreIterator#hasNext()
      AbstractMergedSortedCacheStoreIterator#hasNext()
      - FilteredCacheIterator#hasNext()
      - WrappedSessionStoreIterator#hasNext()
        SegmentIterator#hasNext()
        Segment.range(from, to)
        RocksDBStore.range(from, to)

- - - - RocksDBStore.validateStoreOpen() (v)
        return new RocksDBRangeIterator()
        return
        return
      - return
    - return
  - return
- CompositeKeyValueIterator#next()
- return
DelegatingPeekingKeyValueIterator#next()
- return keyvalue

Expand

title	Call trace 8: ReadOnlyWindowStore#fetch

CompositeReadOnlySessionStore#fetch(key) (v)
- WrappingStoreProvider#stores() (v)
  - StreamThreadStateStoreProvider#stores() (v)
- MeteredWindowStore#fetch()
  - CachingWindowStore#fetch(k, tf, tt)
    - AbstractStateStore#validateStoreOpen()
      - ChangeLoggingWindowBytesStore#isOpen()
        AbstractStateStore#isOpen()
        RocksDBWindowBytesStore#isOpen()
        RocksDBSegmentedBytesStore#isOpen()
        return
        return
        return
      - return
    - ChangeLoggingWindowBytesStore#fetch()
      - RocksDBWindowStoreBytesStore#fetch()
        RocksDBSegmentedBytesStore#fetch()
        WindowKeySchema#segmentsToSearch()
        Segments#segments()
        RocksDBStore#isOpen()
        return segments
        return
        return new SegmentIterator()
        WindowStoreIteratorWrapper.bytesIterator()
        return new WrappedWindowStoreBytesIterator()
        return
      - return
    - ThreadCache#range()
      - return new MemoryLRUCacheBytesIterator
    - return new MergedSortedCacheWindowStoreIterator
  - return new MeteredWindowStoreIterator
- MeteredWindowStoreIterator#hasNext()
  AbstractMergedSortedCacheStoreIterator#hasNext()
  - WrappedWindowStoreIterator#hasNext()
    - SegmentIterator#hasNext()
      - Segment#range()
        RocksDBStore#range()
        RocksDBStore#validateStoreOpen()
        return RocksDBRangeIterator
      - return
    - return
  - return
- return
MeteredWindowStoreIterator#hasNext()
- MeteredSortedCacheWindowStoreIterator#hasNext()
  AbstractMergedSortedCacheStoreIterator#hasNext()
  - WrappedWindowStoreIterator#hasNext()
    - SegmentIterator#hasNext()
      - Segment#range()
        RocksDBStore#range()
        RocksDBStore#validateStoreOpen() (v)
        return RocksDBRangeIterator
      - return
    - return
  - return
- return
MeteredWindowStoreIterator#next()
- MergedSortedCacheWindowStoreIterator#next()
  AbstractMergedSortedCacheStoreIterator#next()
  - WrappedWindowStoreBytesIterator#hasNext()
    - SegmentIterator#hasNext()
      - return
    - return
  - AbstractMergedSortedCacheStoreIterator#nextStoreValue()
    - WrappedWindowStoreBytesIterator#next()
      - SegmentIterator#next()
        SegmentIterator#hasNext()
        return
        RocksDBRangeIterator#next()
        RocksDBRangeIterator#hasNext()
        RocksDBIterator#hasNext() (v)
        return
        RocksIterator#next()
        return entry
        return
      - return keyvalue
    - return
  - return
- return keyvalue

Changes in call trace

Code Block

language	java

public interface QueryableStoreType<T> {
    // TODO: pass stream instance parameter
    T create(final KafkaStreams streams, final StateStoreProvider storeProvider, final String storeName);
}

...

Space shortcuts

Child pages

Versions Compared

Old Version 26

New Version 27

Key

Proposed Changes

Call Trace

Call Trace

Changes in call trace

Space shortcuts

Child pages

Page History

Versions Compared

Old Version 26

New Version 27

Key

Proposed Changes

Call Trace

Call Trace

Changes in call trace