[infinispan-issues] [JBoss JIRA] Commented: (ISPN-939) Index corruption when remote node dies during commit

[Tristan Tarrant (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-939?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12583728#comment-12583728 ] 

Tristan Tarrant commented on ISPN-939:
--------------------------------------

According to the Lucene documentation I believe the code that handles problems during index writing should be handled thus:
{code:title=Indexer.java}
try {
    writer.addDocument(...);
     :
    writer.commit();
} catch (Throwable t) {
    writer.rollback(); // Undo the changes
    writer.close(false); // Close without waiting for merges, aborting any currently running
}
{code}

> Index corruption when remote node dies during commit
> ----------------------------------------------------
>
>                 Key: ISPN-939
>                 URL: https://issues.jboss.org/browse/ISPN-939
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Lucene Directory
>    Affects Versions: 4.2.1.CR2
>            Reporter: Tristan Tarrant
>            Assignee: Sanne Grinovero
>         Attachments: read_past_eof.log, suspect_exception_node1.log
>
>
> Using a scenario similar to the one described in ISPN-909:
> Infinispan: 3 caches: lockCache (replicated, volatile, no eviction), metadataCache (replicated, persisted, no eviction), dataCache (distributed, persisted, eviction, hash numOwners=2)
> Node 1: coordinator, IndexWriter open constantly and writing a stream of documents, committing after each one
> Node 2: opens a read-only IndexReader to perform queries, using reopen to keep in sync with the updates coming from node 1
> If we "kill -9" node 2 (to simulate a crash), we get a SuspectException in node 1 during the pre-commit phase (within IndexWriter.commit()). Catching the Throwable we then close() the writer but from then on we get "Read past EOF" errors when trying to access the index (both with readers and writers).

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