Christopher Tubbs created ACCUMULO-1712:
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Summary: Remove special characters from path names of metadata
tables
Key: ACCUMULO-1712
URL: https://issues.apache.org/jira/browse/ACCUMULO-1712
Project: Accumulo
Issue Type: Improvement
Reporter: Christopher Tubbs
Fix For: 1.6.0
This is particularly problematic because of the quoting required to examine
hdfs paths with a "!" character in them. The root table ID and the metadata
table ID should not use special characters.
Some considerations:
# should not collide with possible user table IDs
# might be useful, but may not be necessary, to retain lexicographical sort
order, so root table goes first, then metadata table, then other tables
Some options:
# Use negative numbers: -1 for the root table, -2 for the metadata table (my
personal favorite)
# Use a different special character: %, &, +, or . (each of which may have
special considerations)
# Reserve a block of IDs for internal use (say, 0-10 or 0-100), and move other
tables on upgrade
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