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Posted to hdfs-issues@hadoop.apache.org by "Bharat Viswanadham (Jira)" <ji...@apache.org> on 2019/10/21 21:19:00 UTC
[jira] [Updated] (HDDS-2343) Add immutable entries in to the
DoubleBuffer.
[ https://issues.apache.org/jira/browse/HDDS-2343?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Bharat Viswanadham updated HDDS-2343:
-------------------------------------
Description:
OMBucketCreateRequest.java L181:
omClientResponse =
new OMBucketCreateResponse(omBucketInfo,
omResponse.build());
We add this to double-buffer, and double-buffer flushThread which is running in the background when picks up, converts to protoBuf and to ByteArray and write to rocksDB tables. So, during this conversion(This conversion will be done without any lock acquire), if any other request changes internal structure(like acls list) of OMBucketInfo we might get ConcurrentModificationException.
was:
OMBucketCreateRequest.java L181:
omClientResponse =
new OMBucketCreateResponse(omBucketInfo,
omResponse.build());
We add this to double-buffer, and double-buffer flushThread which is running in the background when picks up, converts to protoBuf and to ByteArray and write to rocksDB tables. So, during this conversion, if any other request changes internal structure(like acls list) of OMBucketInfo we might get ConcurrentModificationException.
> Add immutable entries in to the DoubleBuffer.
> ---------------------------------------------
>
> Key: HDDS-2343
> URL: https://issues.apache.org/jira/browse/HDDS-2343
> Project: Hadoop Distributed Data Store
> Issue Type: Task
> Reporter: Bharat Viswanadham
> Assignee: Bharat Viswanadham
> Priority: Major
>
> OMBucketCreateRequest.java L181:
> omClientResponse =
> new OMBucketCreateResponse(omBucketInfo,
> omResponse.build());
>
> We add this to double-buffer, and double-buffer flushThread which is running in the background when picks up, converts to protoBuf and to ByteArray and write to rocksDB tables. So, during this conversion(This conversion will be done without any lock acquire), if any other request changes internal structure(like acls list) of OMBucketInfo we might get ConcurrentModificationException.
>
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