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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-15811) Batch Get after batch Put does not fetch all Cells
Date Thu, 12 May 2016 21:47:13 GMT

     [ https://issues.apache.org/jira/browse/HBASE-15811?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

stack updated HBASE-15811:
        Fix Version/s:     (was: 1.2.1)
         Release Note: We were not waiting on all executors in a batch to complete which meant
a read-your-own-writes could sometimes fail -- especially if client is loaded; i.e. putting
to multiple machines in a cluster. The test for no-more-executors was damaged by the 0.99/0.98.4
fix "HBASE-11403 Fix race conditions around Object#notify"
    Affects Version/s: 1.0.0
               Status: Patch Available  (was: Open)

> Batch Get after batch Put does not fetch all Cells
> --------------------------------------------------
>                 Key: HBASE-15811
>                 URL: https://issues.apache.org/jira/browse/HBASE-15811
>             Project: HBase
>          Issue Type: Bug
>          Components: Client
>    Affects Versions: 0.98.19, 1.2.1, 1.0.0, 1.3.0
>            Reporter: stack
>            Assignee: stack
>            Priority: Blocker
>             Fix For: 1.3.0, 1.2.2, 1.1.6, 0.98.19
>         Attachments: 15811.branch-1.patch, Test.java, Test2.java
> A big batch put followed by a batch get does not always return all Cells put. See attached
test program by Robert Farr that reproduces the issue. It seems to be an issue to do with
a cluster of more than one machine. Running against a single machine does not have the problem
(though the single machine may have many regions). Robert was unable to make his program fail
with a single machine only.
> I reproduced what Robert was seeing running his program. I was also unable to make a
single machine fail. In a batch of 1000 puts, I see one to three Gets fail. I noticed too
that if I wait a second after a fail and then re-get, the Get succeeds.

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