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From "Julian Reschke (JIRA)" <j...@apache.org>
Subject [jira] [Reopened] (OAK-8446) Enable datastore consistency check after completion of garbage collection
Date Mon, 01 Jul 2019 12:58:00 GMT

     [ https://issues.apache.org/jira/browse/OAK-8446?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Julian Reschke reopened OAK-8446:
---------------------------------

Test failure:

{noformat}
[ERROR] consistencyCheckWithGc(org.apache.jackrabbit.oak.plugins.document.MongoBlobGCTest)
 Time elapsed: 1.265 s  <<< ERROR!
java.lang.RuntimeException: Unable to start docker container: DockerConfig{name=MongoDB}
        at com.arakelian.docker.junit.DockerRule$StatementWithDockerRule.evaluate(DockerRule.java:79)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
        at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
        at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
        at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
        at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
        at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:365)
        at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:273)
        at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:238)
        at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:159)
        at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:384)
        at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:345)
        at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:126)
        at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:418)
Caused by: java.lang.ClassCastException: org.apache.jackrabbit.oak.plugins.document.mongo.MongoBlobStore
cannot be cast to org.apache.jackrabbit.oak.plugins.blob.SharedDataStore
        at org.apache.jackrabbit.oak.plugins.blob.MarkSweepGarbageCollector.checkConsistency(MarkSweepGarbageCollector.java:691)
        at org.apache.jackrabbit.oak.plugins.document.MongoBlobGCTest.consistencyCheckWithGc(MongoBlobGCTest.java:308)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
        at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
        at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
        at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
        at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
        at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:48)
        at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:48)
        at com.arakelian.docker.junit.DockerRule$StatementWithDockerRule.evaluate(DockerRule.java:76)
        ... 19 more

{noformat}

It appears the new code assumes that every `BloBStore` is an instance of `SharedBlobStore`.

> Enable datastore consistency check after completion of garbage collection
> -------------------------------------------------------------------------
>
>                 Key: OAK-8446
>                 URL: https://issues.apache.org/jira/browse/OAK-8446
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: blob-plugins, oak-run
>            Reporter: Amit Jain
>            Assignee: Julian Reschke
>            Priority: Major
>             Fix For: 1.16.0
>
>
> Optionally run datastore {{checkConsistency()}} after completion of DSGC to flag possible
data loss immediately.



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