Present both in Solr and Riak.
On Thu, Feb 23, 2017 at 6:02 AM, Fred Dushin <fdus...@basho.com> wrote:
> Running a Solr query has no impact on writes -- Riak search queries are
> direct pass throughs to Solr query and don't touch any of the salient Riak
> systems (batching writes to Solr, YZ AAE, etc). I believe the timing of
> the reappearance is a coincidence.
>
> Is it possible the object reappeared via MDC? Do you have record of the
> reappeared object in your other cluster?
>
> Also, just to confirm, when you say the object reappeared -- it
> re-appeared in Riak (and subsequently in Solr), correct? Or are you saying
> you just find the object in Solr (via a search)?
>
> -Fred
>
> On Feb 23, 2017, at 1:43 AM, al so <volks...@gmail.com> wrote:
>
> Here is brief env:
>> Riak v 2.0.8 + Solr/ 5 node cluster/ MDC
>>
>> Problem:
>> Deleted object suddenly resurrected after few days. Solr search query(
>> "*:*") was executed around the time of reappearance.
>>
>> Bucket property for this reappeared object
>> {
>> "props": {
>> "name": "UsaHype",
>> "allow_mult": false,
>> "basic_quorum": false,
>> "big_vclock": 50,
>> "chash_keyfun": {
>> "mod": "riak_core_util",
>> "fun": "chash_std_keyfun"
>> },
>> "dvv_enabled": true,
>> "dw": "quorum",
>> "last_write_wins": false,
>> "linkfun": {
>> "mod": "riak_kv_wm_link_walker",
>> "fun": "mapreduce_linkfun"
>> },
>> "n_val": 3,
>> "notfound_ok": true,
>> "old_vclock": 86400,
>> "postcommit": [
>> {
>> "mod": "riak_repl_leader",
>> "fun": "postcommit"
>> },
>> {
>> "mod": "riak_repl2_rt",
>> "fun": "postcommit"
>> }
>> ],
>> "pr": 0,
>> "precommit": [
>>
>> ],
>> "pw": 0,
>> "r": "quorum",
>> "repl": true,
>> "rw": "quorum",
>> "small_vclock": 50,
>> "w": "quorum",
>> "young_vclock": 20
>> }
>> }
>>
>>
>> * delete_mode is not configured at all. Defaults to 3 sec? Do Tombstone
>> still get created when no delete_mode at all in the config? Can we query
>> metadata(*X-Riak-Deleted)* for this reappeared object.*
>>
>> How would one go about finding root cause. I do know the date when the
>> object was deleted from our app logs. I also seem to know when it
>> reappeared. Seems like a solr search ("*:*") in code was executed just
>> before this object reappeared? Look at AAE? Is there a way to find if Solr
>> and Riak backends are out-of-sync (AAE?).
>>
>> I understand tuning other params (allow_mult = true, ...) will have its
>> own implications.
>>
>> In summary:
>> How do I find root cause of this issue.
>> How to reliable delete an object.
>>
>> -Volk
>>
>
>
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