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https://issues.apache.org/jira/browse/JCR-3875?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shashank Gupta updated JCR-3875:
--------------------------------
Priority: Minor (was: Critical)
> S3 data store: maxConnections <= writeThreads leads to exception
> ----------------------------------------------------------------
>
> Key: JCR-3875
> URL: https://issues.apache.org/jira/browse/JCR-3875
> Project: Jackrabbit Content Repository
> Issue Type: Bug
> Components: jackrabbit-data
> Reporter: Alexander Klimetschek
> Priority: Minor
>
> The S3 data store [tries to create a thread
> pool|https://github.com/apache/jackrabbit/blob/a9e005191a63078abdcaeace50887f79c79415cb/jackrabbit-aws-ext/src/main/java/org/apache/jackrabbit/aws/ext/ds/S3Backend.java#L170-L171]
> with
> {{maxConnections - writeThreads}}
> but this will fail if you specify the same value for both or less
> maxConnections than writeThreads, and throw:
> {noformat}
> Caused by: org.apache.jackrabbit.core.data.DataStoreException: Could not
> initialize S3 from {s3Encryption=SSE_S3,
> component.name=org.apache.jackrabbit.oak.plugins.blob.datastore.S3DataStore,
> maxConnections=40, secretKey=XXXXXXX, writeThreads=40, service.vendor=The
> Apache Software Foundation, s3Bucket=XXXXX, socketTimeout=120000,
> service.pid=org.apache.jackrabbit.oak.plugins.blob.datastore.S3DataStore,
> component.id=79, connectionTimeout=120000, accessKey=XXXXXXX,
> s3EndPoint=s3.amazonaws.com, s3Region=us-standard, maxErrorRetry=10,
> path=./crx-quickstart/repository/datastore}
> at org.apache.jackrabbit.aws.ext.ds.S3Backend.init(S3Backend.java:188)
> at org.apache.jackrabbit.aws.ext.ds.S3Backend.init(S3Backend.java:121)
> at
> org.apache.jackrabbit.core.data.CachingDataStore.init(CachingDataStore.java:267)
> ... 23 common frames omitted
> Caused by: java.lang.IllegalArgumentException: null
> at
> java.util.concurrent.ThreadPoolExecutor.<init>(ThreadPoolExecutor.java:1310)
> at
> java.util.concurrent.ThreadPoolExecutor.<init>(ThreadPoolExecutor.java:1233)
> at java.util.concurrent.Executors.newFixedThreadPool(Executors.java:114)
> at org.apache.jackrabbit.aws.ext.ds.S3Backend.init(S3Backend.java:174)
> ... 25 common frames omitted
> {noformat}
> It's also not intuitive at all. Maybe it's better to specify the thread pools
> explicitly, i.e. {{writeThreads}} and {{otherThreads}} (whatever that 2nd
> pool exactly is).
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