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https://issues.apache.org/jira/browse/IGNITE-9303?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16712865#comment-16712865
 ] 

Aleksey Plekhanov commented on IGNITE-9303:
-------------------------------------------

[~ilantukh], if we don't check WAL record pageId tag in tracker anymore, we 
also can do some cleanup and delete code, which was written to check this tag:
{code:java}
// Set new fullPageId after recycle or after new page init, because pageId tag 
is changed.
if (record instanceof RecycleRecord)
    page.fullPageId(new FullPageId(((RecycleRecord)record).newPageId(), grpId));
else if (record instanceof InitNewPageRecord)
    page.fullPageId(new FullPageId(((InitNewPageRecord)record).newPageId(), 
grpId));
{code}
and:
{code:java}
page.fullPageId(fullPageId);
{code}
In {{applyWalRecord}} method.

 

> PageSnapshot can contain wrong pageId tag when not dirty page is recycling
> --------------------------------------------------------------------------
>
>                 Key: IGNITE-9303
>                 URL: https://issues.apache.org/jira/browse/IGNITE-9303
>             Project: Ignite
>          Issue Type: Bug
>    Affects Versions: 2.6
>            Reporter: Aleksey Plekhanov
>            Assignee: Ilya Lantukh
>            Priority: Major
>             Fix For: 2.8
>
>
> When page is recycling (for example in {{BPlusTree.Remove#freePage()}} -> 
> {{DataStructure#recyclePage()}}) tag of {{pageId}} is modified, but original 
> {{pageId}} is passed to {{writeUnlock()}} method and this passed {{pageId}} 
> is stored to PageSnapshot WAL record.
> This bug may lead to errors in WAL applying during crash recovery.
> Reproducer (ignite-indexing module must be in classpath):
> {code:java}
> public class WalFailReproducer extends AbstractWalDeltaConsistencyTest {
>     @Override protected boolean checkPagesOnCheckpoint() {
>         return true;
>     }
>     public final void testPutRemoveCacheDestroy() throws Exception {
>         CacheConfiguration<Integer, Integer> ccfg = new 
> CacheConfiguration<>("cache0");
>         ccfg.setIndexedTypes(Integer.class, Integer.class);
>         IgniteEx ignite = startGrid(0);
>         ignite.cluster().active(true);
>         IgniteCache<Integer, Integer> cache0 = ignite.getOrCreateCache(ccfg);
>         for (int i = 0; i < 5_000; i++)
>             cache0.put(i, i);
>         forceCheckpoint();
>         for (int i = 1_000; i < 4_000; i++)
>             cache0.remove(i);
>         forceCheckpoint();
>         stopAllGrids();
>     }
> }
> {code}



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