Corrupted index

elasticsearch.log

[2014-08-29 05:30:07,112][WARN ][cluster.action.shard     ] [Morning Star] [myindex][9] sending failed shard for [myindex][9], node[bhRsAtMtR9iFN8VNB0zo8Q], [R], s[INITIALIZING], indexUUID [Aww2M7B7RLS5WVBLJE2E2g], reason [engine failure, message [corrupted preexisting index][CorruptIndexException[[myindex][9] Corrupted index [corrupted_n85SCtYYTsm4Eux7rjPxtg] caused by: CorruptIndexException[checksum failed (hardware problem?) : expected=r95zlm actual=1yl70z3 (resource=name [_29_es090_0.tim], length [403211], checksum [r95zlm], writtenBy [LUCENE_4_9])]]]]
[2014-08-29 05:30:07,148][WARN ][indices.cluster          ] [Morning Star] [myindex][4] failed to start shard
org.elasticsearch.index.gateway.IndexShardGatewayRecoveryException: [myindex][4] failed to fetch index version after copying it over
        at org.elasticsearch.index.gateway.local.LocalIndexShardGateway.recover(LocalIndexShardGateway.java:152)
        at org.elasticsearch.index.gateway.IndexShardGatewayService$1.run(IndexShardGatewayService.java:132)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.lucene.index.CorruptIndexException: [myindex][4] Corrupted index [corrupted_PCX3Uc0vTrOc-G4xDCOT9g] caused by: CorruptIndexException[checksum failed (hardware problem?) : expected=82a20f8 actual=315958b0 (resource=BufferedChecksumIndexInput(NIOFSIndexInput(path="/var/lib/elasticsearch/mycluster/nodes/0/indices/myindex/4/index/_54.fdt")))]
        at org.elasticsearch.index.store.Store.failIfCorrupted(Store.java:343)
        at org.elasticsearch.index.store.Store.failIfCorrupted(Store.java:328)
        at org.elasticsearch.index.gateway.local.LocalIndexShardGateway.recover(LocalIndexShardGateway.java:119)
        ... 4 more
[2014-08-29 05:32:22,284][WARN ][cluster.action.shard     ] [Benazir Kaur] [myindex][1] received shard failed for [myindex][1], node[bhRsAtMtR9iFN8VNB0zo8Q], [P], s[INITIALIZING], indexUUID [Aww2M7B7RLS5WVBLJE2E2g], reason [Failed to start shard, message [IndexShardGatewayRecoveryException[[myindex][1] failed to fetch index version after copying it over]; nested: CorruptIndexException[[myindex][1] Corrupted index [corrupted_U-OcIfw4TziIF2en6pWE9Q] caused by: orruptIndexException[checksum failed (hardware problem?) : expected=k4lahv actual=9hxzcv (resource=name [_2a.cfs], length [202070], checksum [k4lahv], writtenBy [LUCENE_4_9])]]; ]]
[2014-08-29 05:32:22,345][WARN ][cluster.action.shard     ] [Benazir Kaur] [myindex][1] received shard failed for [myindex][1], node[bhRsAtMtR9iFN8VNB0zo8Q], [P], s[INITIALIZING], indexUUID [Aww2M7B7RLS5WVBLJE2E2g], reason [master [Benazir Kaur][Ra_JgmF2TwqON3_RL8DdJg][Ubuntu-1404-trusty-64-minimal][inet[/127.0.0.1:9301]] marked shard as initializing, but shard is marked as failed, resend shard failure]