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InterviewSolution
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What Is Memstore ? |
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Answer» The MemStore is a write BUFFER where HBase accumulates data in memory before a permanent write. Its contents are flushed to DISK to form an HFile when the MemStore fills up.It doesn’t write to an EXISTING HFile but instead forms a new file on every FLUSH. There is ONE MemStore per column family. The MemStore is a write buffer where HBase accumulates data in memory before a permanent write. Its contents are flushed to disk to form an HFile when the MemStore fills up.It doesn’t write to an existing HFile but instead forms a new file on every flush. There is one MemStore per column family. |
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