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https://issues.apache.org/jira/browse/OAK-5239?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15838082#comment-15838082
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Francesco Mari commented on OAK-5239:
-------------------------------------

The issue seems to be a timeout detected during the transfer of a binary. 
Following are the relevant lines of the output.

{noformat}
03:45:34.669 DEBUG [nioEventLoopGroup-118-2] GetBlobRequestEncoder.java:33 
Sending request from client 6f17ae88-c656-46b6-aed9-42062257f5af for blob 
1c668eec0b1c13a9f04aca3556f7a986768c1e16#5242880
03:45:34.669 DEBUG [nioEventLoopGroup-120-2] RequestDecoder.java:39 Parsed 'get 
blob' request
03:45:34.670 DEBUG [nioEventLoopGroup-120-2] CommunicationObserver.java:136 got 
message 'get blob id' from client 6f17ae88-c656-46b6-aed9-42062257f5af
03:45:34.670 DEBUG [nioEventLoopGroup-120-2] GetBlobRequestHandler.java:39 
Reading blob 1c668eec0b1c13a9f04aca3556f7a986768c1e16#5242880 for client 
6f17ae88-c656-46b6-aed9-42062257f5af
03:45:34.686 DEBUG [nioEventLoopGroup-120-2] CommunicationObserver.java:169 did 
send binary with 5242880 bytes to client 6f17ae88-c656-46b6-aed9-42062257f5af
03:45:34.686 DEBUG [nioEventLoopGroup-120-2] GetBlobResponseEncoder.java:36 
Sending blob 1c668eec0b1c13a9f04aca3556f7a986768c1e16#5242880 to client 
6f17ae88-c656-46b6-aed9-42062257f5af
{noformat}

The binary is 5MB large, as defined by the test and reported by the output 
above. The timeout for an RPC call between the standby and the primary instance 
is 500ms. There is no reason why this test should fail due to a timeout other 
than a hiccup in the Java process. Since this timeout is configurable, I will 
try to increase this value and monitor the outcome of this test over time.

> Test failure: ExternalPrivateStoreIT. testSyncUpdatedBinaryProperty()
> ---------------------------------------------------------------------
>
>                 Key: OAK-5239
>                 URL: https://issues.apache.org/jira/browse/OAK-5239
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: continuous integration, segment-tar
>    Affects Versions: 1.5.15
>            Reporter: Hudson
>            Assignee: Francesco Mari
>              Labels: test-failure
>             Fix For: 1.6
>
>
> Jenkins CI failure: 
> https://builds.apache.org/job/Apache%20Jackrabbit%20Oak%20matrix/
> The build Apache Jackrabbit Oak matrix/jdk=JDK 1.7 
> (latest),nsfixtures=DOCUMENT_RDB,profile=integrationTesting #1320 has failed.
> First failed run: [Apache Jackrabbit Oak matrix/jdk=JDK 1.7 
> (latest),nsfixtures=DOCUMENT_RDB,profile=integrationTesting 
> #1320|https://builds.apache.org/job/Apache%20Jackrabbit%20Oak%20matrix/jdk=JDK%201.7%20(latest),nsfixtures=DOCUMENT_RDB,profile=integrationTesting/1320/]
>  [console 
> log|https://builds.apache.org/job/Apache%20Jackrabbit%20Oak%20matrix/jdk=JDK%201.7%20(latest),nsfixtures=DOCUMENT_RDB,profile=integrationTesting/1320/console]



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