speed up tinkerpop test #208
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how to: 1.speed up rocksdb backend by truncating tables 2.don't need to clear if the database is empty 3.don't need to clear variables if it's empty 4.don't need to commit hbase each len-prefix for delete index-label potential problems: 1.mysql may block if create task vertex-label when truncating table 2.rocksdb may miss CF if create task vertex-label when truncating table 3.hbase may block if truncate hbase with version<2.0 improve #14 Change-Id: I4b2393aea8b0fc63c1886e984a576a1f5808b25c
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Linary
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zhoney
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how to:
1.speed up rocksdb backend by truncating tables
2.don't need to clear if the database is empty
3.don't need to clear variables if it's empty
4.don't need to commit hbase each len-prefix for delete index-label
potential problems:
1.mysql may block if create task vertex-label when truncating table
2.rocksdb may miss CF if create task vertex-label when truncating table
3.hbase may block if truncate hbase with version<2.0
improve #14
Change-Id: I4b2393aea8b0fc63c1886e984a576a1f5808b25c