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https://issues.apache.org/jira/browse/BAHIR-110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16054608#comment-16054608
 ] 

ASF GitHub Bot commented on BAHIR-110:
--------------------------------------

Github user emlaver commented on a diff in the pull request:

    https://github.com/apache/bahir/pull/45#discussion_r122797303
  
    --- Diff: 
sql-cloudant/src/test/scala/org/apache/bahir/cloudant/TestUtils.scala ---
    @@ -0,0 +1,73 @@
    +/*
    + * 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.
    + */
    +
    +package org.apache.bahir.cloudant
    +
    +import java.io.File
    +
    +object TestUtils {
    +  // List of test databases to create from JSON flat files
    +  val testDatabasesList: List[String] = List(
    +    "n_airportcodemapping",
    +    "n_booking",
    +    "n_customer",
    +    "n_customersession",
    +    "n_flight",
    +    "n_flight2",
    +    "n_flightsegment"
    +  )
    +
    +  // Set CouchDB/Cloudant host, username and password for local testing
    +  private val host = System.getenv("DB_HOST")
    --- End diff --
    
    Updated to `CLOUDANT_...` in 0256fc1.


> Replace use of _all_docs API with _changes API in all receivers
> ---------------------------------------------------------------
>
>                 Key: BAHIR-110
>                 URL: https://issues.apache.org/jira/browse/BAHIR-110
>             Project: Bahir
>          Issue Type: Improvement
>            Reporter: Esteban Laver
>   Original Estimate: 216h
>  Remaining Estimate: 216h
>
> Today we use the _changes API for Spark streaming receiver and _all_docs API 
> for non-streaming receiver. _all_docs API supports parallel reads (using 
> offset and range) but performance of _changes API is still better in most 
> cases (even with single threaded support).
> With this ticket we want to:
> a) re-implement all receivers using _changes API
> b) compare performance between the two implementations based on _changes and 
> _all_docs
> Based on the results in b) we could decide to either
> - replace _all_docs implementation with _changes based implementation OR
> - allow customers to pick one (with a solid documentation about pros and 
> cons) 



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