root
/
kafka
mirror of https://github.com/apache/kafka.git
1
0
Fork 0
Code Issues Actions 3 Packages Projects Releases Wiki Activity

MINOR: Improve exception messages when state stores cannot be accessed. (#4383)

This commit is contained in:
Ewen Cheslack-Postava 2018-01-08 11:14:54 -08:00 committed by Guozhang Wang
parent d63f94797c
commit e1c407973f
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
streams/src/main/java/org/apache/kafka/streams/state/internals/StreamThreadStateStoreProvider.java
View File

@ -45,14 +45,16 @@ public class StreamThreadStateStoreProvider implements StateStoreProvider {
return Collections.emptyList();
}
if (!streamThread.isRunningAndNotRebalancing()) {
throw new InvalidStateStoreException("the state store, " + storeName + ", may have migrated to another instance.");
throw new InvalidStateStoreException("Cannot get state store " + storeName + " because the stream thread is " +
streamThread.state() + ", not RUNNING");
}
final List<T> stores = new ArrayList<>();
for (Task streamTask : streamThread.tasks().values()) {
final StateStore store = streamTask.getStore(storeName);
if (store != null && queryableStoreType.accepts(store)) {
if (!store.isOpen()) {
throw new InvalidStateStoreException("the state store, " + storeName + ", may have migrated to another instance.");
throw new InvalidStateStoreException("Cannot get state store " + storeName + " for task " + streamTask +
" because the store is not open. The state store may have migrated to another instances.");
}
stores.add((T) store);
}