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https://issues.apache.org/jira/browse/HIVE-12049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15253676#comment-15253676
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Hive QA commented on HIVE-12049:
--------------------------------
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12800138/HIVE-12049.26.patch
{color:green}SUCCESS:{color} +1 due to 3 test(s) being added or modified.
{color:red}ERROR:{color} -1 due to 6 failed/errored test(s), 9998 tests executed
*Failed tests:*
{noformat}
TestHWISessionManager - did not produce a TEST-*.xml file
org.apache.hadoop.hive.cli.TestMiniSparkOnYarnCliDriver.testCliDriver_index_bitmap3
org.apache.hadoop.hive.ql.lockmgr.TestDbTxnManager.concurrencyFalse
org.apache.hadoop.hive.ql.lockmgr.TestDbTxnManager.testLockTimeout
org.apache.hadoop.hive.ql.lockmgr.TestDbTxnManager.testUpdate
org.apache.hive.beeline.TestSchemaTool.testSchemaInit
{noformat}
Test results:
http://ec2-54-177-240-2.us-west-1.compute.amazonaws.com/job/PreCommit-HIVE-MASTER-Build/36/testReport
Console output:
http://ec2-54-177-240-2.us-west-1.compute.amazonaws.com/job/PreCommit-HIVE-MASTER-Build/36/console
Test logs:
http://ec2-50-18-27-0.us-west-1.compute.amazonaws.com/logs/PreCommit-HIVE-MASTER-Build-36/
Messages:
{noformat}
Executing org.apache.hive.ptest.execution.TestCheckPhase
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
Tests exited with: TestsFailedException: 6 tests failed
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12800138 - PreCommit-HIVE-MASTER-Build
> Provide an option to write serialized thrift objects in final tasks
> -------------------------------------------------------------------
>
> Key: HIVE-12049
> URL: https://issues.apache.org/jira/browse/HIVE-12049
> Project: Hive
> Issue Type: Sub-task
> Components: HiveServer2, JDBC
> Affects Versions: 2.0.0
> Reporter: Rohit Dholakia
> Assignee: Rohit Dholakia
> Attachments: HIVE-12049.1.patch, HIVE-12049.11.patch,
> HIVE-12049.12.patch, HIVE-12049.13.patch, HIVE-12049.14.patch,
> HIVE-12049.15.patch, HIVE-12049.16.patch, HIVE-12049.17.patch,
> HIVE-12049.18.patch, HIVE-12049.19.patch, HIVE-12049.2.patch,
> HIVE-12049.25.patch, HIVE-12049.26.patch, HIVE-12049.3.patch,
> HIVE-12049.4.patch, HIVE-12049.5.patch, HIVE-12049.6.patch,
> HIVE-12049.7.patch, HIVE-12049.9.patch, new-driver-profiles.png,
> old-driver-profiles.png
>
>
> For each fetch request to HiveServer2, we pay the penalty of deserializing
> the row objects and translating them into a different representation suitable
> for the RPC transfer. In a moderate to high concurrency scenarios, this can
> result in significant CPU and memory wastage. By having each task write the
> appropriate thrift objects to the output files, HiveServer2 can simply stream
> a batch of rows on the wire without incurring any of the additional cost of
> deserialization and translation.
> This can be implemented by writing a new SerDe, which the FileSinkOperator
> can use to write thrift formatted row batches to the output file. Using the
> pluggable property of the {{hive.query.result.fileformat}}, we can set it to
> use SequenceFile and write a batch of thrift formatted rows as a value blob.
> The FetchTask can now simply read the blob and send it over the wire. On the
> client side, the *DBC driver can read the blob and since it is already
> formatted in the way it expects, it can continue building the ResultSet the
> way it does in the current implementation.
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