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https://issues.apache.org/jira/browse/BEAM-9010?focusedWorklogId=361899&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-361899
 ]

ASF GitHub Bot logged work on BEAM-9010:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 20/Dec/19 22:09
            Start Date: 20/Dec/19 22:09
    Worklog Time Spent: 10m 
      Work Description: suztomo commented on pull request #10444: [BEAM-9010] 
Proper TableRow size calculation via TableRowJsonCoder
URL: https://github.com/apache/beam/pull/10444#discussion_r360588484
 
 

 ##########
 File path: 
sdks/java/io/google-cloud-platform/src/test/java/org/apache/beam/sdk/io/gcp/bigquery/BigQueryIOReadTest.java
 ##########
 @@ -627,7 +627,11 @@ public void testEstimatedSizeWithoutStreamingBuffer() 
throws Exception {
             .toSource(stepUuid, TableRowJsonCoder.of(), 
BigQueryIO.TableRowParser.INSTANCE);
 
     PipelineOptions options = PipelineOptionsFactory.create();
-    assertEquals(108, bqSource.getEstimatedSizeBytes(options));
+
+    // Each row should have 24 bytes (See StringUtf8Coder in detail):
+    //   first 1 byte indicating length and following 23 bytes: 
{"name":"a","number":1}
+    long expectedSize = 24L * data.size();
+    assertEquals(expectedSize, bqSource.getEstimatedSizeBytes(options));
 
 Review comment:
   Old value `108` did not carry any explanation. Now `expectedSize` is easier 
to understand.
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 361899)
    Time Spent: 0.5h  (was: 20m)

> BigQuery TableRow's size is toString().length() ?
> -------------------------------------------------
>
>                 Key: BEAM-9010
>                 URL: https://issues.apache.org/jira/browse/BEAM-9010
>             Project: Beam
>          Issue Type: Improvement
>          Components: runner-dataflow
>            Reporter: Tomo Suzuki
>            Assignee: Tomo Suzuki
>            Priority: Minor
>         Attachments: TableRowJsonCoder_behavior_remains_same.png
>
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
>
> The following tests failed when I tried to upgrade google-http-client 1.34.0 
> from 1.28.0:
> {noformat}
> org.apache.beam.sdk.io.gcp.bigquery.BigQueryIOReadTest.testEstimatedSizeWithoutStreamingBuffer
> org.apache.beam.sdk.io.gcp.bigquery.BigQueryIOReadTest.testEstimatedSizeWithStreamingBuffer
> org.apache.beam.sdk.io.gcp.bigquery.BigQueryUtilTest.testInsertAll
> {noformat}
> [https://builds.apache.org/job/beam_PreCommit_Java_Commit/9288/#showFailuresLink]
> h3. Reason of the test failures
> [org.apache.beam.sdk.io.gcp.testing.TableContainer|https://github.com/apache/beam/blob/6fa94c9/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/testing/TableContainer.java#L43]
>  and 
> [org.apache.beam.sdk.io.gcp.bigquery.BigQueryServicesImpl|https://github.com/apache/beam/blob/c2f0d28/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/bigquery/BigQueryServicesImpl.java#L758]
>  rely on {{TableRow.toString().length()}} to calculate the size. Example:
> {code:java}
>           dataSize += row.toString().length();
>           if (dataSize >= maxRowBatchSize
>               || rows.size() >= maxRowsPerBatch
>               || i == rowsToPublish.size() - 1) {
> {code}
> However, with [google-http-client's 
> PR#589|https://github.com/googleapis/google-http-java-client/pull/589/files#diff-914cd7ff18143b3d2398149e1cfb4f45R218],
>  the GenericData.toString output has changed since v1.29.0.
> In old google-http-client 1.28.0, an example row's toString returned:
> {noformat}
> {f=[{v=foo}, {v=1234}]}
> {noformat}
> In new google-http-client 1.29.0 and higher, the same row's toString returns:
> {noformat}
> GenericData{classInfo=[f], {f=[GenericData{classInfo=[v], {v=foo}}, 
> GenericData{classInfo=[v], {v=1234}}]}}
> {noformat}
> h1. Question:
> Is this right thing to rely on {{toString().length()}} in the BigQuery 
> classes?



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