[jira] [Commented] (IGNITE-15213) StreamCorruptedException when running a node with an existing PDS

["Ivan Bessonov (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IGNITE-15213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17390647#comment-17390647 ] 

Ivan Bessonov commented on IGNITE-15213:
----------------------------------------

Looks good, thank you for the contribution!

> StreamCorruptedException when running a node with an existing PDS
> -----------------------------------------------------------------
>
>                 Key: IGNITE-15213
>                 URL: https://issues.apache.org/jira/browse/IGNITE-15213
>             Project: Ignite
>          Issue Type: Bug
>            Reporter: Aleksandr Polovtcev
>            Assignee: Aleksandr Polovtcev
>            Priority: Major
>             Fix For: 3.0.0-alpha3
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> When running an Ignite node with an existing PDS folder, the following exception is printed in the logs during configuration startup:
>  
> {code:java}
> WARNING: Could not deserialize an object
> java.io.StreamCorruptedException: invalid stream header: 00000000
> 	at java.base/java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:940)
> 	at java.base/java.io.ObjectInputStream.<init>(ObjectInputStream.java:379)
> 	at org.apache.ignite.internal.util.ByteUtils.fromBytes(ByteUtils.java:138)
> 	at org.apache.ignite.internal.storage.DistributedConfigurationStorage.readAll(DistributedConfigurationStorage.java:116)
> 	at org.apache.ignite.internal.configuration.ConfigurationChanger.register(ConfigurationChanger.java:193)
> 	at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)
> 	at org.apache.ignite.internal.configuration.ConfigurationRegistry.start(ConfigurationRegistry.java:121)
> 	at org.apache.ignite.internal.configuration.ConfigurationManager.start(ConfigurationManager.java:73)
> 	at org.apache.ignite.internal.app.IgnitionImpl.doStartComponent(IgnitionImpl.java:418)
> 	at org.apache.ignite.internal.app.IgnitionImpl.doStart(IgnitionImpl.java:279)
> 	at org.apache.ignite.internal.app.IgnitionImpl.start(IgnitionImpl.java:133)
> 	at org.apache.ignite.app.IgnitionManager.start(IgnitionManager.java:64)
> 	at org.apache.ignite.example.table.KeyValueBinaryViewExample.main(KeyValueBinaryViewExample.java:46)
> {code}
> This error happens due to a bug in the {{DistributedConfigurationStorage}}: {{MASTER_KEY}}, that is used to store the configuration version, also happens to be the same as the key prefix in the metastore. This leads to confusion, for example, it is accidentally included in the data read from the vault in the {{readAll}} method, which leads to de-serialization errors.
>  



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