A couple of new useful features were rolled out in the 0.9.7.10 release which are described below.
1. Hypertable.Cluster.Name property We've added the property Hypertable.Cluster.Name<http://hypertable.com/documentation/reference_manual/configuration_properties#Hypertable.Cluster.Name>which can be used to assign a name to a cluster which will be displayed in the Monitoring UI and in the subject line of administrator notification messages. The property is optional, but it is useful if you're running multiple clusters. 2. Better DELETE support in .tsv files. Deleting data from Hypertable involves inserting delete tombstones. A delete tombstone is just a key with a special delete flag and an empty value. The system will logically remove the data described by the tombstone during query execution. The deleted data will be physically removed (garbage collected) over time via background maintenance tasks. The following list describes the supported tombstone types: *DELETE_ROW* - Remove row content that is chronologically less than or equal to the given timestamp. *DELETE_COLUMN_FAMILY* - Remove all cells within the given column family of the given row with a timestamp that is chronologically less than or equal to the given timestamp. *DELETE_CELL* - Remove all versions of a cell whose timestamp is chronologically less than or equal to the given timestamp. *DELETE_CELL_VERSION* - Remove cell version whose timestamp exactly matches the given timestamp. Delete tombstones may be specified in either the three column or four column of the single-cell-per-line .tsv formats by supplying an additional column, after an empty value column, that contains one of the delete markers described in the above table. For the three column format, the timestamp will be auto-assigned to the "current" time. Example .tsv file: #timestamp row column value 2013-08-27 00:13:46 com.hypertable.www DELETE_ROW 2013-08-27 00:13:46 com.hypertable.www tag DELETE_COLUMN_FAMILY 2013-08-27 00:13:46 com.hypertable.www tag:foo DELETE_CELL 2013-08-27 00:13:46 com.hypertable.www tag:foo DELETE_CELL_VERSION -- Doug Judd CEO, Hypertable Inc. -- You received this message because you are subscribed to the Google Groups "Hypertable Development" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/hypertable-dev. For more options, visit https://groups.google.com/groups/opt_out.
