Sahil Takiar has uploaded this change for review. ( 
http://gerrit.cloudera.org:8080/16532


Change subject: IMPALA-10202: Enable file handle cache for ABFS files
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IMPALA-10202: Enable file handle cache for ABFS files

Like IMPALA-8428, but for ABFS, instead of S3A. Adds support for adding
ABFS file handles to the file handle cache. Support for ABFSInputStream
unbuffer operations was added in HADOOP-16859.

Ran a full table scan of a 1GB store_sales table on ABFS, made
sure the file handles were cached (validated via the runtime
profile); did this multiple times, against several different
copies of the store_sales table, in order to increase the number
of file handles cached by an impalad.

Tested:
* Tested against a ABFS storage account I have access to

Change-Id: I64f12f832980f4e0207af78368402dd09e370fc3
---
M be/src/runtime/io/disk-io-mgr.cc
M be/src/runtime/io/scan-range.cc
M tests/custom_cluster/test_hdfs_fd_caching.py
3 files changed, 11 insertions(+), 6 deletions(-)



  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/32/16532/1
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I64f12f832980f4e0207af78368402dd09e370fc3
Gerrit-Change-Number: 16532
Gerrit-PatchSet: 1
Gerrit-Owner: Sahil Takiar <[email protected]>

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