ayushtkn commented on a change in pull request #2380:
URL: https://github.com/apache/ozone/pull/2380#discussion_r661117604
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File path:
hadoop-hdds/server-scm/src/test/java/org/apache/hadoop/hdds/scm/update/server/MockCRLStore.java
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@@ -106,7 +106,7 @@ public BigInteger issueCert() throws Exception {
List<CRLInfo> crlInfos =
scmCertStore.getCrls(ImmutableList.of(crlId.get()));
- if (crlInfos.isEmpty()) {
+ if (crlInfos == null || crlInfos.isEmpty()) {
Review comment:
When `crlInfos ` can be `null`?
The value is fetched from.
``scmCertStore.getCrls(ImmutableList.of(crlId.get()));`` and this doesn't look
like returning a `null` in any case. It is in general returning an empty list,
if it can not find anything?
Secondly, If I understand the code correct, now if `crlInfos` is null, we
will log the line below, so, will this ` crlInfos.get(0)` not throw a NPE since
`crlInfos` is null?
Thirdly, How this `null` check, preventing an `IndexOutOfBoundsException`
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