Have elastic search setup with cluster size of 20+ nodes. Last week encountered an issue related to index corruption with following traceback in logs.
org.apache.lucene.index.CorruptIndexException: checksum failed (hardware problem?) : expected=8kz594 actual=d7xu05 (resource=name [_5y0_Lucene50_0.tim], length , checksum [8kz594], writtenBy [6.6.1])
There was enough space on disk, having disk size of 1Tb with consumed only 200Gb.
Elasticsearch Version: 5.6.6
Any help regarding this is appreciated.
Thanks in advance.