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From Yi Pan <nickpa...@gmail.com>
Subject Re: RocksDB TTL not working
Date Fri, 11 Mar 2016 19:34:22 GMT
Hi, Rohit,

RocksDB TTL is best-effort:
https://github.com/facebook/rocksdb/wiki/Time-to-Live. And the expired
records are removed during compaction.

I wonder in your test case whether the compaction has ever happened. How
long did you wait to see whether records are gone or not?

-Yi

On Thu, Mar 10, 2016 at 9:50 PM, Rohit Bansal <bansalrohit90@gmail.com>
wrote:

> Navina,
>
> Please find my configurations file below -
>
> # Licensed to the Apache Software Foundation (ASF) under one
> # or more contributor license agreements.  See the NOTICE file
> # distributed with this work for additional information
> # regarding copyright ownership.  The ASF licenses this file
> # to you under the Apache License, Version 2.0 (the
> # "License"); you may not use this file except in compliance
> # with the License.  You may obtain a copy of the License at
> #
> #   http://www.apache.org/licenses/LICENSE-2.0
> #
> # Unless required by applicable law or agreed to in writing,
> # software distributed under the License is distributed on an
> # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
> # KIND, either express or implied.  See the License for the
> # specific language governing permissions and limitations
> # under the License.
>
> job.factory.class=org.apache.samza.job.local.ThreadJobFactory
> job.name=stream-poc
> job.coordinator.system=kafka
> job.coordinator.replication.factor=1
>
> task.class=samza.stream.poc.Consolidate
> task.inputs=stream.consolidate
> task.consumer.batch.size=100
> task.window.ms=20000
>
> # Serializers
>
> serializers.registry.json.class=org.apache.samza.serializers.JsonSerdeFactory
>
> serializers.registry.string.class=org.apache.samza.serializers.StringSerdeFactory
>
> # Systems
>
> systems.stream.samza.factory=org.apache.samza.system.kafka.KafkaSystemFactory
> systems.stream.samza.key.serde=string
> systems.stream.samza.msg.serde=string
> systems.stream.consumer.zookeeper.connect=localhost:2181
> systems.stream.producer.bootstrap.servers=localhost:9092
>
> # Kafka System
>
> systems.kafka.samza.factory=org.apache.samza.system.kafka.KafkaSystemFactory
> systems.kafka.samza.msg.serde=string
> systems.kafka.samza.key.serde=string
> systems.kafka.consumer.zookeeper.connect=localhost:2181
> systems.kafka.producer.bootstrap.servers=localhost:9092
>
>
> stores.rocksdb.factory=org.apache.samza.storage.kv.RocksDbKeyValueStorageEngineFactory
> stores.rocksdb.key.serde=string
> stores.rocksdb.msg.serde=string
> stores.rocksdb.rocksdb.ttl.ms=2000
>
>
> *My test case :-*
>
> *Putting data in store (with TTL 2 seconds) and then getting data from
> store and printing in console in window() method which is executed in
> windowing operation in every 20 seconds. Data is printed in all windowing
> operation executions and is not getting deleted. It should have printed
> null.*
>
> *Thanks*
>
> On Fri, Mar 11, 2016 at 12:31 AM, Navina Ramesh <
> nramesh@linkedin.com.invalid> wrote:
>
> > Hi Rohit,
> > Are you running samza 0.10.0 or the latest from trunk?
> >
> > It will be helpful to paste your config here. Please do not attach it to
> > the email because the mail server filters attachments.
> >
> > Thanks!
> > Navina
> >
> > On Thu, Mar 10, 2016 at 3:05 AM, Rohit Bansal <bansalrohit90@gmail.com>
> > wrote:
> >
> > > Hi,
> > >
> > > My messages are not getting deleted even after I have mentioned 2000 ms
> > as
> > > TTL in properties file. Do I need to add any other properties or make
> > > changes to any configuration for TTL to evict messages from db ? I can
> > > attach my task file and properties file if needed.
> > >
> > > --
> > >
> > > Regards
> > >
> > > Rohit Bansal
> > >
> > > +91-7838732062
> > >
> >
> >
> >
> > --
> > Navina R.
> >
>
>
>
> --
>
> Regards
>
> Rohit Bansal
>
> +91-7838732062
>

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