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From Brian Spindler <brian.spind...@gmail.com>
Subject Re: upgrading from 2.x TWCS to 3.x TWCS
Date Fri, 02 Nov 2018 18:57:28 GMT
you are right, it won't even compile:

[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR]
/Users/bspindler/src/github/twcs/src/main/java/com/jeffjirsa/cassandra/db/compaction/TimeWindowCompactionStrategy.java:[110,90]
cannot find symbol
  symbol:   method
getOverlappingSSTables(org.apache.cassandra.db.lifecycle.SSTableSet,java.util.Set<org.apache.cassandra.io.sstable.format.SSTableReader>)
  location: variable cfs of type org.apache.cassandra.db.ColumnFamilyStore
[ERROR]
/Users/bspindler/src/github/twcs/src/main/java/com/jeffjirsa/cassandra/db/compaction/TimeWindowCompactionStrategy.java:[150,99]
cannot find symbol
  symbol:   class SizeComparator
  location: class org.apache.cassandra.io.sstable.format.SSTableReader
[ERROR]
/Users/bspindler/src/github/twcs/src/main/java/com/jeffjirsa/cassandra/db/compaction/TimeWindowCompactionStrategy.java:[330,59]
cannot find symbol
  symbol:   class SizeComparator
  location: class org.apache.cassandra.io.sstable.format.SSTableReader
[ERROR]
/Users/bspindler/src/github/twcs/src/main/java/com/jeffjirsa/cassandra/db/compaction/SizeTieredCompactionStrategy.java:[104,67]
cannot find symbol
  symbol:   class SizeComparator
  location: class org.apache.cassandra.io.sstable.format.SSTableReader
[INFO] 4 errors



On Fri, Nov 2, 2018 at 2:52 PM Jeff Jirsa <jjirsa@gmail.com> wrote:

> There’s a chance it will fail to work - possible method signatures changed
> between 3.0 and 3.11. Try it in a test cluster before prod
>
>
> --
> Jeff Jirsa
>
>
> On Nov 2, 2018, at 11:49 AM, Brian Spindler <brian.spindler@gmail.com>
> wrote:
>
> Nevermind, I spoke to quickly.  I can change the cass version in the
> pom.xml and re compile, thanks!
>
> On Fri, Nov 2, 2018 at 2:38 PM Brian Spindler <brian.spindler@gmail.com>
> wrote:
>
>> <image.png>
>>
>>
>> On Fri, Nov 2, 2018 at 2:34 PM Jeff Jirsa <jjirsa@gmail.com> wrote:
>>
>>> Easiest approach is to build the 3.11 jar from my repo, upgrade, then
>>> ALTER table to use the official TWCS (org.apache.cassandra) jar
>>>
>>> Sorry for the headache. I hope I have a 3.11 branch for you.
>>>
>>>
>>> --
>>> Jeff Jirsa
>>>
>>>
>>> On Nov 2, 2018, at 11:28 AM, Brian Spindler <brian.spindler@gmail.com>
>>> wrote:
>>>
>>> Hi all, we're planning an upgrade from 2.1.5->3.11.3 and currently we
>>> have several column families configured with twcs class
>>> 'com.jeffjirsa.cassandra.db.compaction.TimeWindowCompactionStrategy' and
>>> with 3.11.3 we need to set it to 'TimeWindowCompactionStrategy'
>>>
>>> Is that a safe operation?  Will cassandra even start if the column
>>> family has a compaction strategy defined with a classname it cannot
>>> resolve?
>>> How to deal with different versioned nodes and different class names
>>> during the upgrade of the binaries throughout the cluster?
>>>
>>> Thank you for any guidance,
>>> Brian
>>>
>>>

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