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https://issues.apache.org/jira/browse/CASSANDRA-18359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17704684#comment-17704684
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Paulo Motta commented on CASSANDRA-18359:
-----------------------------------------
bq. PR is here [https://github.com/apache/cassandra/pull/2243]
+1
bq. I think that we should make setting one of dirs to "/" illegal. It does
not make sense. If we were to scan all dirs in / for snapshots, we would
basically have to traverse whole filesystem. That is dangerous, time consuming,
error prone on ownership etc etc.
I think settings data dirs to "/" is too esoteric to worry about.
> NullPointerException on SnapshotLoader.loadSnapshots
> ----------------------------------------------------
>
> Key: CASSANDRA-18359
> URL: https://issues.apache.org/jira/browse/CASSANDRA-18359
> Project: Cassandra
> Issue Type: Bug
> Components: Local/Snapshots
> Reporter: Paulo Motta
> Assignee: Stefan Miklosovic
> Priority: Normal
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> Node startup fail with on 4.1.1:
> {noformat}
> INFO [main] 2023-03-23 18:13:13,585 MigrationCoordinator.java:257 - Starting
> migration coordinator and scheduling pulling schema versions every PT1M
> ERROR [main] 2023-03-23 18:13:13,592 CassandraDaemon.java:898 - Exception
> encountered during startup
> java.lang.NullPointerException: null
> at
> org.apache.cassandra.service.snapshot.SnapshotLoader$Visitor.preVisitDirectory(SnapshotLoader.java:106)
> at
> org.apache.cassandra.service.snapshot.SnapshotLoader$Visitor.preVisitDirectory(SnapshotLoader.java:77)
> at java.base/java.nio.file.Files.walkFileTree(Files.java:2732)
> at
> org.apache.cassandra.service.snapshot.SnapshotLoader.loadSnapshots(SnapshotLoader.java:162)
> at
> org.apache.cassandra.service.snapshot.SnapshotManager.loadSnapshots(SnapshotManager.java:114)
> at
> org.apache.cassandra.service.snapshot.SnapshotManager.start(SnapshotManager.java:88)
> at
> org.apache.cassandra.service.StorageService.startSnapshotManager(StorageService.java:1050)
> at
> org.apache.cassandra.service.StorageService.prepareToJoin(StorageService.java:1043)
> at
> org.apache.cassandra.service.StorageService.initServer(StorageService.java:842)
> at
> org.apache.cassandra.service.StorageService.initServer(StorageService.java:775)
> at
> org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:425)
> at
> org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:752)
> at
> org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:876)
> {noformat}
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