21 lines
970 B
Plaintext
21 lines
970 B
Plaintext
=== Multiple `data.path` striping
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Previously, if the `data.path` setting listed multiple data paths, then a
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shard would be ``striped'' across all paths by writing a whole file to each
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path in turn (in accordance with the `index.store.distributor` setting). The
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result was that files from a single segment in a shard could be spread across
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multiple disks, and the failure of any one disk could corrupt multiple shards.
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This striping is no longer supported. Instead, different shards may be
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allocated to different paths, but all of the files in a single shard will be
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written to the same path.
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If striping is detected while starting Elasticsearch 2.0.0 or later, *all of
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the files belonging to the same shard will be migrated to the same path*. If
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there is not enough disk space to complete this migration, the upgrade will be
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cancelled and can only be resumed once enough disk space is made available.
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The `index.store.distributor` setting has also been removed.
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