how can i find out whether a bucket is hot , cold ,warm bucket. For example , db_2587397960_1411235746_15480, how do i know whether this bucket is hot or warm or cold ?
Please have a try
| dbinspect index=*
You can further extend it by putting various filters
| dbinspect index=*| search bucketid=*someid*
Refer to How the indexer stores indexes , it would depend on the location on disk and the naming standard, .
You may also wish to look into the dbinspect command, the mentioned bucket would either be warm or cold.