streamtool resetstreamsconfigcache

Usage

resetstreamsconfigcache [-h,--help] [--trace <level>] [-v,--verbose <level>] [--zkconnect {<host>:<port>},... | --embeddedzk]

The streamtool resetstreamsconfigcache command resets the Streams configuration cache, which contains mappings between domains and ZooKeeper connection strings.

Authority

You do not need any authority to run this command.

Description

The configuration cache is created or updated when you create or remove a domain. Because of the cached information about the domain name and its associated ZooKeeper connection information, you can run streamtool commands and provide only the domain ID. The cache is stored in your .streams directory.

Because the Streams configuration cache is maintained locally, the information can become stale. If you run a streamtool command and it tries to use the wrong ZooKeeper connection information, use this command to reset the cache.

Options

--embeddedzk

Specifies to use the embedded copy of ZooKeeper. This option is not supported within the interactive streamtool interface.

If you are not using the interactive streamtool interface and you do not specify either this option or the --zkconnect option, Streams uses the ZooKeeper connection that is associated with the active domain or the domain that is specified in the --domain-id option. Streams determines which connection maps to the domain by using cached information about the domains. In this scenario, if the domain identifier is not unique in the Streams configuration cache, the command fails.

-h,--help
Specifies to show the command syntax.
--trace <level>
Specifies the trace setting. The following valid levels are listed in order of increasing verbosity, which is to say that the first level in the list generates the least amount of information:
  • off
  • error
  • warn
  • info
  • debug
  • trace
The default value is off.
-v,--verbose <level>
Specifies to provide more detailed command output. The verbosity level can be 0-3, where 0 disables detailed reporting and each increment provides more detailed output.
--zkconnect <{<host>:<port>},...>

The name of one or more host and port pairs that specify the configured ZooKeeper servers. This option is not supported within the interactive streamtool interface.

If you are not using the interactive streamtool interface and you do not specify this option, Streams tries to use:

  1. The --embeddedzk option
  2. The value from the STREAMS_ZKCONNECT environment variable
  3. A ZooKeeper connection string that is derived from cached information about the current domain.