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azure_snitch: Handle empty zone returned from IMDS

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Azure metadata API may return empty zone sometimes. If that happens
shard-0 gets empty string as its rack, but propagates UNKNOWN_RACK to
other shards.

Empty zones response should be handled regardless.

refs: #12185

Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>

Closes #12274
This commit is contained in:
Pavel Emelyanov
2022-12-12 16:52:49 +03:00
committed by Avi Kivity
parent 2d845b6244
commit e20738cd7d
1 changed files with 2 additions and 1 deletions
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3
locator/azure_snitch.cc
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@@ -45,7 +45,8 @@ future<> azure_snitch::load_config() {
logger().info("AzureSnitch using region: {}, zone: {}.", azure_region, azure_zone);
_my_rack = azure_zone;
// Zoneless regions return empty zone
_my_rack = (azure_zone != "" ? azure_zone : azure_region);
_my_dc = azure_region;
co_return co_await container().invoke_on_others([this] (snitch_ptr& local_s) {