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Posted to issues@hbase.apache.org by "Bryan Beaudreault (Jira)" <ji...@apache.org> on 2021/11/30 23:33:00 UTC
[jira] [Updated] (HBASE-26522) Improve documentation of hbase 1.x to 2.x potential incompatibilities
[ https://issues.apache.org/jira/browse/HBASE-26522?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Bryan Beaudreault updated HBASE-26522:
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Description:
We're working on a major upgrade of almost 900 tables across 100 production clusters (and corresponding QA environment clusters). We've upgraded about 25% of our QA environment and run into a series of incompatibilities along the way. Most of them have been easy to get around, but I wanted to create this Jira to collect them so that we can make an update to the docs for future upgraders.
My plan is to periodically edit this description to add to the list. If anyone else has anything to contribute, feel free to edit as well or add a comment.
Incompatibilities to document:
- https://issues.apache.org/jira/browse/HBASE-15676 changed the serialized byte string used for the fuzzy mask. FuzzyRowFilters created by older clients will not match any rows in an hbase2 cluster.
- CDH5 try/catches bad HTableDescriptor.getDurability calls and returns USE_DEFAULT. In hbase2, if someone creates a table with a bad durability (i.e. DEFAULT instead of USE_DEFAULT), it results in a failure which causes the CreateTableProcedure to infinitely retries with no backoff. This rapid retry caused a bunch of pain on the cluster that encountered it, backing up datanode's ability to keep up with the millions of calls to create and delete .regioninfo files.
was:
We're working on a major upgrade of almost 900 tables across 100 production clusters (and corresponding QA environment clusters). We've upgraded about 25% of our QA environment and run into a series of incompatibilities along the way. Most of them have been easy to get around, but I wanted to create this Jira to collect them so that we can make an update to the docs for future upgraders.
My plan is to periodically edit this description to add to the list. If anyone else has anything to contribute, feel free to edit as well or add a comment.
Incompatibilities to document:
- https://issues.apache.org/jira/browse/HBASE-15676 changed the serialized byte string used for the fuzzy mask. FuzzyRowFilters created by older clients will not match any rows in an hbase2 cluster.
> Improve documentation of hbase 1.x to 2.x potential incompatibilities
> ---------------------------------------------------------------------
>
> Key: HBASE-26522
> URL: https://issues.apache.org/jira/browse/HBASE-26522
> Project: HBase
> Issue Type: Improvement
> Reporter: Bryan Beaudreault
> Assignee: Bryan Beaudreault
> Priority: Minor
>
> We're working on a major upgrade of almost 900 tables across 100 production clusters (and corresponding QA environment clusters). We've upgraded about 25% of our QA environment and run into a series of incompatibilities along the way. Most of them have been easy to get around, but I wanted to create this Jira to collect them so that we can make an update to the docs for future upgraders.
> My plan is to periodically edit this description to add to the list. If anyone else has anything to contribute, feel free to edit as well or add a comment.
> Incompatibilities to document:
> - https://issues.apache.org/jira/browse/HBASE-15676 changed the serialized byte string used for the fuzzy mask. FuzzyRowFilters created by older clients will not match any rows in an hbase2 cluster.
> - CDH5 try/catches bad HTableDescriptor.getDurability calls and returns USE_DEFAULT. In hbase2, if someone creates a table with a bad durability (i.e. DEFAULT instead of USE_DEFAULT), it results in a failure which causes the CreateTableProcedure to infinitely retries with no backoff. This rapid retry caused a bunch of pain on the cluster that encountered it, backing up datanode's ability to keep up with the millions of calls to create and delete .regioninfo files.
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