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https://issues.apache.org/jira/browse/HBASE-10434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13884999#comment-13884999
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ramkrishna.s.vasudevan commented on HBASE-10434:
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I saw that for the DBE case we were writing it in the HCD meta data. So I
thouhgt we have to do the similar thing for WAL also. You raised and fixed it
before me. Good one.
+1.
> Store Tag compression information for a WAL in its header
> ---------------------------------------------------------
>
> Key: HBASE-10434
> URL: https://issues.apache.org/jira/browse/HBASE-10434
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.98.0
> Reporter: Anoop Sam John
> Assignee: Anoop Sam John
> Fix For: 0.98.0, 0.99.0
>
> Attachments: HBASE-10434.patch
>
>
> We can enable/disable tag compression along with WAL compression using the
> config,
> hbase.regionserver.wal.tags.enablecompression -> Defaults to true so that
> compress tags when WAL compress is ON.
> We are not storing this info abt whether a WAL containing compressed tags or
> not in the WAL header and use that in the read path. So dynamic change of
> this in some servers may cause issue when an RS having this value as true
> have to read and split a WAL generated from n RS where this value was false.
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