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Posted to dev@hbase.apache.org by "Jim Kellerman (JIRA)" <ji...@apache.org> on 2008/10/13 19:10:44 UTC

[jira] Created: (HBASE-922) Bloom filters will not work if enabled after table is created and contains data

Bloom filters will not work if enabled after table is created and contains data
-------------------------------------------------------------------------------

                 Key: HBASE-922
                 URL: https://issues.apache.org/jira/browse/HBASE-922
             Project: Hadoop HBase
          Issue Type: Bug
    Affects Versions: 0.18.0
            Reporter: Jim Kellerman
             Fix For: 0.19.0


Currently it is possible to enable a bloom filter after a table is created and data has been stored in it by disabling the table and modifying the column.

While this correctly sets the attribute in the column descriptor, it does not create bloom filters for existing data so that on the first compaction, an NPE will be thrown because the HStore expects each HStoreFile to have a bloom filter.

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[jira] Assigned: (HBASE-922) Bloom filters will not work if enabled after table is created and contains data

Posted by "Jim Kellerman (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HBASE-922?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jim Kellerman reassigned HBASE-922:
-----------------------------------

    Assignee: Jim Kellerman

> Bloom filters will not work if enabled after table is created and contains data
> -------------------------------------------------------------------------------
>
>                 Key: HBASE-922
>                 URL: https://issues.apache.org/jira/browse/HBASE-922
>             Project: Hadoop HBase
>          Issue Type: Bug
>    Affects Versions: 0.18.0
>            Reporter: Jim Kellerman
>            Assignee: Jim Kellerman
>             Fix For: 0.19.0
>
>
> Currently it is possible to enable a bloom filter after a table is created and data has been stored in it by disabling the table and modifying the column.
> While this correctly sets the attribute in the column descriptor, it does not create bloom filters for existing data so that on the first compaction, an NPE will be thrown because the HStore expects each HStoreFile to have a bloom filter.

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[jira] Resolved: (HBASE-922) Bloom filters will not work if enabled after table is created and contains data

Posted by "stack (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HBASE-922?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stack resolved HBASE-922.
-------------------------

    Resolution: Invalid

This issue became invalid when we moved to hfile.  We still need to deal with users enabling/disabling bloom filters but the game has changed where this issue is concerned.

> Bloom filters will not work if enabled after table is created and contains data
> -------------------------------------------------------------------------------
>
>                 Key: HBASE-922
>                 URL: https://issues.apache.org/jira/browse/HBASE-922
>             Project: Hadoop HBase
>          Issue Type: Bug
>    Affects Versions: 0.18.0
>            Reporter: Jim Kellerman
>            Assignee: Jim Kellerman
>            Priority: Blocker
>             Fix For: 0.20.0
>
>
> Currently it is possible to enable a bloom filter after a table is created and data has been stored in it by disabling the table and modifying the column.
> While this correctly sets the attribute in the column descriptor, it does not create bloom filters for existing data so that on the first compaction, an NPE will be thrown because the HStore expects each HStoreFile to have a bloom filter.

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[jira] Updated: (HBASE-922) Bloom filters will not work if enabled after table is created and contains data

Posted by "Jim Kellerman (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HBASE-922?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jim Kellerman updated HBASE-922:
--------------------------------

    Priority: Blocker  (was: Major)

> Bloom filters will not work if enabled after table is created and contains data
> -------------------------------------------------------------------------------
>
>                 Key: HBASE-922
>                 URL: https://issues.apache.org/jira/browse/HBASE-922
>             Project: Hadoop HBase
>          Issue Type: Bug
>    Affects Versions: 0.18.0
>            Reporter: Jim Kellerman
>            Assignee: Jim Kellerman
>            Priority: Blocker
>             Fix For: 0.19.0
>
>
> Currently it is possible to enable a bloom filter after a table is created and data has been stored in it by disabling the table and modifying the column.
> While this correctly sets the attribute in the column descriptor, it does not create bloom filters for existing data so that on the first compaction, an NPE will be thrown because the HStore expects each HStoreFile to have a bloom filter.

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[jira] Updated: (HBASE-922) Bloom filters will not work if enabled after table is created and contains data

Posted by "Jim Kellerman (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HBASE-922?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jim Kellerman updated HBASE-922:
--------------------------------

    Fix Version/s:     (was: 0.19.0)
                   0.20.0

Moving to 0.20.0 since the best way of resolving this problem is if the HTableDescriptor is readily available to the client (which means moving HTableDescriptor out of HRegionInfo).

We should add a release note about this problem for 0.19.0, saying that a column's bloom filter setting should not be changed after the table is created.

> Bloom filters will not work if enabled after table is created and contains data
> -------------------------------------------------------------------------------
>
>                 Key: HBASE-922
>                 URL: https://issues.apache.org/jira/browse/HBASE-922
>             Project: Hadoop HBase
>          Issue Type: Bug
>    Affects Versions: 0.18.0
>            Reporter: Jim Kellerman
>            Assignee: Jim Kellerman
>            Priority: Blocker
>             Fix For: 0.20.0
>
>
> Currently it is possible to enable a bloom filter after a table is created and data has been stored in it by disabling the table and modifying the column.
> While this correctly sets the attribute in the column descriptor, it does not create bloom filters for existing data so that on the first compaction, an NPE will be thrown because the HStore expects each HStoreFile to have a bloom filter.

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