FSDirectory.fsync() may not work properly
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Key: LUCENE-3237
URL: https://issues.apache.org/jira/browse/LUCENE-3237
Project: Lucene - Java
Issue Type: Bug
Components: core/store
Reporter: Shai Erera
Fix For: 3.4, 4.0
Spinoff from LUCENE-3230. FSDirectory.fsync() opens a new RAF, sync() its
FileDescriptor and closes RAF. It is not clear that this syncs whatever was
written to the file by other FileDescriptors. It would be better if we do this
operation on the actual RAF/FileOS which wrote the data. We can add sync() to
IndexOutput and FSIndexOutput will do that.
Directory-wise, we should stop syncing on file names, and instead sync on the
IOs that performed the write operations.
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