[jira] [Assigned] (IGNITE-16177) Snapshot restore operation may hang if cache contains "empty" partitions

["Pavel Pereslegin (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-16177?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Pavel Pereslegin reassigned IGNITE-16177:
-----------------------------------------

    Assignee: Pavel Pereslegin

> Snapshot restore operation may hang if cache contains "empty" partitions
> ------------------------------------------------------------------------
>
>                 Key: IGNITE-16177
>                 URL: https://issues.apache.org/jira/browse/IGNITE-16177
>             Project: Ignite
>          Issue Type: Bug
>    Affects Versions: 2.12
>            Reporter: Pavel Pereslegin
>            Assignee: Pavel Pereslegin
>            Priority: Major
>              Labels: iep-43
>
> The snapshot restore may hang when some of the cache group partitions have not been physically created (for example, there is not enough data in the cache).
> Reproducer
> {code:java}
> public class IgniteClusterSnapshotRestoreEmptyPartsTest extends IgniteClusterSnapshotRestoreBaseTest {
>     @Test
>     public void testRestoreWithEmptyPartition() throws Exception {
>         // Cache with 1024 partitions.
>         CacheConfiguration<Integer, Object> cacheCfg1 = new CacheConfiguration<>(CACHE1);
>         // Add only 10 keys (only 10 partitions will be created on the disk).
>         IgniteEx ignite = startGridsWithCache(1, 1024, Integer::new, cacheCfg1);
>         // Snapshot contains only 10 (out of 1024 "affinity" partitions).
>         ignite.snapshot().createSnapshot(SNAPSHOT_NAME).get(TIMEOUT);
>         ignite.cache(CACHE1).destroy();
>         // The restore operation hangs during the "preload" phase.
>         ignite.snapshot().restoreSnapshot(SNAPSHOT_NAME, null).get(TIMEOUT);
>     }
> }
> {code}



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