keith-turner opened a new issue #2110:
URL: https://github.com/apache/accumulo/issues/2110
When an external compaction is running tablets record this in the metadata
table w/ information about the external compaction. The following is an
example of this. In the following json the fields `tmp` and `dest` are a bit
redundant, could look into only having one of the fields. All that is needed
for the running external compaction is `tmp` field, that is where its writing
to. The `dest` field is what the file will be renamed to when the compaction
commits.
```
4< ecomp:ECID:04d6f4a3-3caa-46e6-9ea5-ce77a0ddc8dc []
{"inputs":["hdfs://localhost:8020/accumulo/tables/4/default_tablet/A000005v.rf"],"nextFiles":[],"tmp":"hdfs://localhost:8020/accumulo/tables/4/default_tablet/A000005y.rf_tmp","dest":"hdfs://localhost:8020/accumulo/tables/4/default_tablet/A000005y.rf","compactor":"ip-10-113-12-25:9101","kind":"USER","executorId":"DCQ1","priority":288230376151711745,"propDels":false,"selectedAll":true,"compactionId":2}
```
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