[teiid-issues] [JBoss JIRA] (TEIID-5658) PG transport can deliver messages out of order

[Steven Hawkins (Jira)]

     [ https://issues.jboss.org/browse/TEIID-5658?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins resolved TEIID-5658.
-----------------------------------
    Resolution: Done


Addressed by using the event loop executor - which does guarantee order.  Also added synchronization in several places to help enforce usage assumptions.

> PG transport can deliver messages out of order
> ----------------------------------------------
>
>                 Key: TEIID-5658
>                 URL: https://issues.jboss.org/browse/TEIID-5658
>             Project: Teiid
>          Issue Type: Bug
>          Components: ODBC
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>            Priority: Major
>             Fix For: 12.1, 12.0.1, 11.2.3
>
>
> Although it is not apparent in our logs, we are delivering response messages out of order.
> From our logs we have:
> 2019-02-14 08:18:12.476 org.teiid.ODBC TRACE NIO1 invoking server method: prepare [, select 3 from pg_class where relname='pg_class', []]
> 2019-02-14 08:18:12.476 org.teiid.ODBC TRACE NIO1 invoking client method: org.teiid.transport.ODBCClientInstance at 6064753f prepareCompleted []
> 2019-02-14 08:18:12.48 org.teiid.ODBC TRACE NIO1 invoking server method: bindParameters [, , [], 0, null, UTF-8]
> 2019-02-14 08:18:12.481 org.teiid.ODBC TRACE NIO1 invoking client method: org.teiid.transport.ODBCClientInstance at 6064753f bindComplete null
> 2019-02-14 08:18:12.481 org.teiid.ODBC TRACE NIO1 invoking server method: getResultSetMetaDataDescription []
> 2019-02-14 08:18:12.481 org.teiid.ODBC TRACE NIO1 invoking client method: org.teiid.transport.ODBCClientInstance at 6064753f sendResultSetDescription [[org.teiid.odbc.PGUtil$PgColInfo at 333d1d1b], null]
> 2019-02-14 08:18:12.481 org.teiid.ODBC TRACE NIO1 invoking server method: execute [, 0]
> 2019-02-14 08:18:12.484 org.teiid.ODBC TRACE NIO1 invoking client method: org.teiid.transport.ODBCClientInstance at 6064753f sendResults [null, org.teiid.jdbc.ResultSetImpl at 4516a1a2, [org.teiid.odbc.PGUtil$PgColInfo at 333d1d1b], org.teiid.client.util.ResultsFuture at 1e98b9de, FORWARD, -1, false, null]
> 2019-02-14 08:18:12.486 org.teiid.ODBC TRACE Worker2_QueryProcessorQueue211 invoking client method: org.teiid.transport.ODBCClientInstance at 6064753f sendCommandComplete [select 3 from pg_class where relname='pg_class', [1]]
> 2019-02-14 08:18:12.486 org.teiid.ODBC TRACE NIO1 invoking server method: sync null
> 2019-02-14 08:18:12.486 org.teiid.ODBC TRACE NIO1 invoking client method: org.teiid.transport.ODBCClientInstance at 6064753f ready [false, false]
> 2019-02-14 08:18:12.486 org.teiid.ODBC TRACE Worker0_QueryProcessorQueue212 invoking client method: org.teiid.transport.ODBCClientInstance at 3e802be1 ready [false, false]
> At the network level we see ready delivered before the data row.



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