Hunk User Manual

Set up a virtual index in the configuration file

Use the following procedure to set up a virtual index using the configuration file. See "Add or edit a virtual index" in this manual for information about adding a virtual index via the Hunk user interface.

1. Define one or more virtual indexes for each provider. This is where you can specify how the data is organized into directories, which files are part of the index and some hints about the time range of the content of the files.

vix.provider          = MyHadoopProvider
vix.input.1.path      = /home/myindex/data/${date_date}/${date_hour}/${server}/...
vix.input.1.accept    = \.gz$  = /home/myindex/data/(\d+)/(\d+)/ = yyyyMMddHH = 0  = /home/myindex/data/(\d+)/(\d+)/ = yyyyMMddHH = 3600
  • For vix.input.1.path: Provide a fully qualified path to the data that belongs in this index and any fields you want to extract from the path.

For example:


Items enclosed in ${}'s are extracted as fields and added to each search result from that path. The search will ignore the directories which do not match the search string, thus significantly aiding performance.

  • For vix.input.1.accept provide a regular expression whitelist of files to match.
  • For vix.input.1.ignore provide a regular expression blacklist of files to ignore. Note, ignore takes precedence over accept.

2. Use the regex, format, and offset values to extract a time range for the data contained in a particular path. The time range is made up of two parts: earliest time and latest time The following configurations can be used:

  • For, provide a regular expression that matches a portion of the directory which provides date and time, to allow for interpreting time from the path.
    Use capturing groups to extract the parts that make up the timestamp. The values of the capturing groups are concatenated together and are interpreted according to the specified format. Extracting a time range from the path will significantly speed searching for particular time windows by ignoring directories which fall outside of the search's time range.
  • For, provide a date/time format string for how to interpret the data extracted from the above regex. The format string specs can be found in the SimpleDateFormat.

The following two non-standard formats are also supported: epoch to interpret the data as an epoch time and mtime to use the modification time of the file rather than the data extracted by the regex.

  • For, you can optionally use it to provide an offset to account for timezone and/or safety boundaries.
Last modified on 06 May, 2014
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This documentation applies to the following versions of Hunk®(Legacy): 6.0, 6.0.1, 6.0.2, 6.0.3, 6.1, 6.1.1, 6.1.2, 6.1.3, 6.2, 6.2.1, 6.2.2, 6.2.3, 6.2.4, 6.2.5, 6.2.6, 6.2.7, 6.2.8, 6.2.9, 6.2.10, 6.2.11, 6.2.12, 6.2.13, 6.3.0, 6.3.1, 6.3.2, 6.3.3, 6.3.4, 6.3.5, 6.3.6, 6.3.7, 6.3.8, 6.3.9, 6.3.10, 6.3.11, 6.3.12, 6.3.13, 6.4.0, 6.4.1, 6.4.2, 6.4.3, 6.4.4, 6.4.5, 6.4.6, 6.4.7, 6.4.8, 6.4.9, 6.4.10, 6.4.11

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