[jira] [Updated] (HBASE-19496) Reusing the ByteBuffer in rpc layer corrupt the ServerLoad and RegionLoad

["Chia-Ping Tsai (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-19496?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chia-Ping Tsai updated HBASE-19496:
-----------------------------------
    Attachment: HBASE-19496.wip.patch

[~ram_krish] Please see the wip patch. The test case fails in current master branch. I hack the netty/simple server to disable the reuse. And then looped the tests 20 times. No failure happens.

> Reusing the ByteBuffer in rpc layer corrupt the ServerLoad and RegionLoad
> -------------------------------------------------------------------------
>
>                 Key: HBASE-19496
>                 URL: https://issues.apache.org/jira/browse/HBASE-19496
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Chia-Ping Tsai
>            Assignee: Chia-Ping Tsai
>            Priority: Blocker
>             Fix For: 2.0.0-beta-1
>
>         Attachments: HBASE-19496.wip.patch
>
>
> {{ServerLoad}} and {{RegionLoad}} store the pb object internally but the bytebuffer of pb object may be reused in rpc layer. Hence, the {{ServerLoad}} and {{RegionLoad}} which saved by {{HMaster}} will be corrupted if the bytebuffer backed is modified.
> This issue doesn't happen on branch-1.
> # netty server was introduced in 2.0 (see HBASE-17263)
> # reusing bytebuffer to read RPC requests was introduced in 2.0 (see HBASE-15788)



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