Takashi Menjo created NIFI-8219:
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Summary: PMEM-backed Repositories
Key: NIFI-8219
URL: https://issues.apache.org/jira/browse/NIFI-8219
Project: Apache NiFi
Issue Type: New Feature
Components: Core Framework
Environment: PMEM, x64, Linux, DAX, PMDK
Reporter: Takashi Menjo
Persistent memory (PMEM) is non-volatile and byte-addressable memory installed
into DIMM slots. With Filesystem DAX (Direct Access) and PMDK (Persistent
Memory Development Kit), a program can map on-PMEM files to userspace then read
and write its data, bypassing page caches. These technologies could bring you
better I/O performance than traditional disks.
I would propose a patchset that lets FlowFile, Content, and Provenance
Repositories use PMDK (via JNI) to write their data to their files shown as
follows:
* FlowFile Repository: Journals (.journal)
* Content Repository: Content/Resource Claims
* Provenance Repository: Provenance logs (.prov) and ToCs (.toc)
*Please note that this patchset works only on x64 Linux (4.15 or later) for
now.*
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