release index-label-delete lock when do index rebuild

[zhoney]

fix #1181
Change-Id: I90b45afcc4a6c1568c5df7e044e976954ec82b22

[codecov]

Codecov Report

Merging #1193 into master will increase coverage by 35.55%.
The diff coverage is 100.00%.

@@              Coverage Diff              @@
##             master    #1193       +/-   ##
=============================================
+ Coverage     29.65%   65.21%   +35.55%     
- Complexity      263     5704     +5441     
=============================================
  Files            75      361      +286     
  Lines          4208    29548    +25340     
  Branches        510     4172     +3662     
=============================================
+ Hits           1248    19270    +18022     
- Misses         2797     8320     +5523     
- Partials        163     1958     +1795     

Impacted Files	Coverage Δ	Complexity Δ
...idu/hugegraph/job/schema/RebuildIndexCallable.java	84.93% <100.00%> (ø)	21.00 <0.00> (?)
...h/backend/store/cassandra/CassandraSerializer.java	90.47% <0.00%> (ø)	27.00% <0.00%> (?%)
...java/com/baidu/hugegraph/type/define/DataType.java	86.40% <0.00%> (ø)	53.00% <0.00%> (?%)
...aidu/hugegraph/backend/store/raft/StoreAction.java	85.71% <0.00%> (ø)	4.00% <0.00%> (?%)
...c/main/java/com/baidu/hugegraph/type/HugeType.java	88.70% <0.00%> (ø)	69.00% <0.00%> (?%)
.../java/com/baidu/hugegraph/dist/HugeRestServer.java	33.33% <0.00%> (ø)	3.00% <0.00%> (?%)
...u/hugegraph/backend/store/hbase/HbaseFeatures.java	90.00% <0.00%> (ø)	18.00% <0.00%> (?%)
.../com/baidu/hugegraph/analyzer/SmartCNAnalyzer.java	87.50% <0.00%> (ø)	4.00% <0.00%> (?%)
.../com/baidu/hugegraph/analyzer/MMSeg4JAnalyzer.java	66.66% <0.00%> (ø)	5.00% <0.00%> (?%)
...du/hugegraph/backend/tx/GraphIndexTransaction.java	81.16% <0.00%> (ø)	200.00% <0.00%> (?%)
... and 278 more

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