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Posted to reviews@bahir.apache.org by emlaver <gi...@git.apache.org> on 2017/06/27 13:55:03 UTC

[GitHub] bahir issue #45: [WIP] [BAHIR-110] Implement _changes API for non-streaming ...

Github user emlaver commented on the issue:

    https://github.com/apache/bahir/pull/45
  
    WIP: While running tests against databases with a size > 500 MB, `java.lang.OutOfMemoryError: Java heap space` error would occur (even when setting `--conf spark.driver.memory=10g`).  I believe this has to do with how the HTTP request is setup and called against the `_changes API` in [JsonStoreDataAccess.scala](https://github.com/apache/bahir/pull/45/files#diff-ab440bd537d48f7cf58cd9cf0ea143b1).
    Good news is I've created a test that uses Spark streaming (using CloudantReceiver.java) to read all docs from a Cloudant database into a Spark DataFrame.  It should work for a SQL Temp Table.  I ran this test without any java heap errors against a database size of 1 GB, 1.8 GB, and 14.2 GB.


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