From 5b9233bfe815d0e2e827e039e0862309c6b0c2e0 Mon Sep 17 00:00:00 2001
From: anand76 <anand76@devvm1373.frc2.facebook.com>
Date: Mon, 18 Nov 2019 09:35:37 -0800
Subject: [PATCH] Fix a test failure on systems that don't have Snappy
 compression libraries (#6038)

Summary:
The ParallelIO/DBBasicTestWithParallelIO.MultiGet/11 test fails if Snappy compression library is not installed, since RocksDB defaults to Snappy if none is specified. So dynamically determine the supported compression types and pick the first one.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6038

Differential Revision: D18532370

Pulled By: anand1976

fbshipit-source-id: a0a735114d1f8892ea09f7c4af8688d7bcc5b075
---
 db/db_basic_test.cc | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/db/db_basic_test.cc b/db/db_basic_test.cc
index 84111aec42..46bfaaec2b 100644
--- a/db/db_basic_test.cc
+++ b/db/db_basic_test.cc
@@ -1663,6 +1663,19 @@ class DBBasicTestWithParallelIO
     Options options = CurrentOptions();
     Random rnd(301);
     BlockBasedTableOptions table_options;
+
+    if (compression_enabled_) {
+      std::vector<CompressionType> compression_types;
+      compression_types = GetSupportedCompressions();
+      // Not every platform may have compression libraries available, so
+      // dynamically pick based on what's available
+      if (compression_types.size() == 0) {
+        compression_enabled_ = false;
+      } else {
+        options.compression = compression_types[0];
+      }
+    }
+
     table_options.block_cache = uncompressed_cache_;
     if (table_options.block_cache == nullptr) {
       table_options.no_block_cache = true;