Search:

Type: Posts; User: rbetts

Page 1 of 8 1 2 3 4

Search: Search took 0.05 seconds.

  1. Replies
    1
    Views
    102

    This is correct. VoltDB manages its metadata...

    This is correct. VoltDB manages its metadata through its catalog - a combination of your DDL and stored procedure byte code (if your app includes stored procedures). The catalog is documented:
    ...
  2. Replies
    3
    Views
    918

    I should also mention that you can see the query...

    I should also mention that you can see the query plans for your database by browsing to http://<a-database-node>:8080/. You can browse that report to see procedures, some attributes about procedures...
  3. Replies
    3
    Views
    918

    VoltDB provides a set of "System Procedures"...

    VoltDB provides a set of "System Procedures" which give statistics such as query execution time. Please see https://voltdb.com/docs/UsingVoltDB/sysprocstatistics.php. You can execute these from...
  4. Replies
    1
    Views
    127

    Hi, Presently, VoltDB does not support nested...

    Hi,

    Presently, VoltDB does not support nested queries. The link you posted describes VoltDB SQL's support - it expresses the SELECT queries that are possible with VoltDB as of the current version....
  5. Replies
    6
    Views
    1,326

    Multi-partition queries that execute a single...

    Multi-partition queries that execute a single batch of SQL are efficient and not chatty. You can return result sets up to 50MB from VoltDB this way. Another, more scalable way, to do this with VoltDB...
  6. Louis, VoltDB is fully ACID database -...

    Louis,

    VoltDB is fully ACID database - including full transactional durability. VoltDB is built to scale horizontally - you can add servers to a VoltDB cluster to increase database capacity and...
  7. Replies
    3
    Views
    3,081

    Perhaps our dev-center recipe on partitioning...

    Perhaps our dev-center recipe on partitioning will help you here:
    http://voltdb.com/dev-center/cookbook/configuring-partitioning/

    That article also links to the Using VoltDB documentation guide...
  8. Thread: Command log

    by rbetts
    Replies
    8
    Views
    10,060

    For single partition work, VoltDB writes orders...

    For single partition work, VoltDB writes orders the log by partition and then writes it to disk (with some added complexity to be fast). A mental model of thinking of it as per-partition at every...
  9. Thread: Command log

    by rbetts
    Replies
    8
    Views
    10,060

    First - you can run synchronous command logging...

    First - you can run synchronous command logging to guarantee that every transaction is fsync'd to each replica's disk before a reply is generated to the client. That avoids this question entirely.
    ...
  10. Thread: Command log

    by rbetts
    Replies
    8
    Views
    10,060

    In addition to Ben's reply, you can find some...

    In addition to Ben's reply, you can find some additional detail about command log implementation on the blog:http://blog.voltdb.com/tag/command-logging/. Please refer to the documentation as the...
  11. Replies
    7
    Views
    7,972

    VoltDB includes a feature called "partition...

    VoltDB includes a feature called "partition detection." Because VoltDB is a strictly consistent system, if a k-safe cluster is faulted in such a way as to leave two complete copies of the database...
  12. Replies
    3
    Views
    3,338

    [QUOTE=Shanky;2941]Hi, This the content of...

    [QUOTE=Shanky;2941]Hi,

    This the content of deployment.xml

    <?xml version="1.0"?>
    <deployment>
    <cluster hostcount="3" sitesperhost="2" kfactor="1"/>
    <httpd enabled="true">
    ...
  13. Gavin, The AGPL requires that the source of...

    Gavin,

    The AGPL requires that the source of any software linked to VoltDB AGPL'd source, or any modifications made to VoltDB directly, be made available to users of that software, regardless if...
  14. David, Can you send the full log file to...

    David,

    Can you send the full log file to support@voltdb.com? It isn't quite obvious to me what is happening here and which exceptions appeared where / when. The last error is reporting that the...
  15. My experiment of reply from my phone has failed,...

    My experiment of reply from my phone has failed, apparently...

    [MP][RW] InsertTestData -- this insert is Multi-partition (that's the MP abbreviation in the report ... sorry there isn't a legend...
  16. My experiment of reply from my phone has failed,...

    My experiment of reply from my phone has failed, apparently...

    [MP][RW] InsertTestData -- this insert is Multi-partition (that's the MP abbreviation in the report ... sorry there isn't a legend...
  17. Replies
    2
    Views
    1,201

    Hi - sorry this forum post slipped through the...

    Hi - sorry this forum post slipped through the cracks. I'm not currently aware of a scala driver.

    Note that the existing Java driver for VoltDB is already fully asynchronous -- if you want to...
  18. Replies
    2
    Views
    1,201

    Hi - sorry this forum post slipped through the...

    Hi - sorry this forum post slipped through the cracks. I'm not currently aware of a scala driver.

    Note that the existing Java driver for VoltDB is already fully asynchronous -- if you want to...
  19. Looks like the patch for this is present on a...

    Looks like the patch for this is present on a separate version of the client - but not merged to the version that owns master.
    ...
  20. Is it possible that you are running all...

    Is it possible that you are running all multi-partition procedures? Can you post the output of the voltdb compile (catalog creation) command?

    Ryan.
  21. Is it possible that you are running all...

    Is it possible that you are running all multi-partition procedures? Can you post the output of the voltdb compile (catalog creation) command?

    Ryan.
  22. Replies
    2
    Views
    784

    Paul, Thank you for this defect report. You...

    Paul,

    Thank you for this defect report. You can track the status here if interested:

    https://issues.voltdb.com/browse/ENG-4401

    Ryan.
  23. Replies
    2
    Views
    784

    Paul, Thank you for this defect report. You...

    Paul,

    Thank you for this defect report. You can track the status here if interested:

    https://issues.voltdb.com/browse/ENG-4401

    Ryan.
  24. Thread: Java7 on Linux

    by rbetts
    Replies
    5
    Views
    1,683

    Thank you for this error report - looks like...

    Thank you for this error report - looks like we'll have to do a little more work to make this check correct with Java 7. We do run Java 7 internally here and there but production testing is done on...
  25. Thread: Java7 on Linux

    by rbetts
    Replies
    5
    Views
    1,683

    Thank you for this error report - looks like...

    Thank you for this error report - looks like we'll have to do a little more work to make this check correct with Java 7. We do run Java 7 internally here and there but production testing is done on...
Results 1 to 25 of 188
Page 1 of 8 1 2 3 4