Fix NPE when maxAttempts = 0 in RetryableCommandExecutor #4187
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Fixes a
NullPointerExceptionwhenmaxAttempts = 0inRetryableCommandExecutor. When no retries are allowed,lastExceptionremainsnull, and callingaddSuppressed(lastException)throws:java.lang.NullPointerException: Cannot suppress a null exceptionThis fix checks for null before suppressing.
Reproducible with:
JedisCluster jedis = new JedisCluster( new HostAndPort("localhost", 6379), 2000, // connection timeout 2000, // soTimeout 0, // maxAttempts null, // password new JedisPoolConfig() ); jedis.set("key", "value"); // NPE thrownConfirmed on: Jedis 3.9.0
master branch (RetryableCommandExecutor.java#L71