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James Taylor commented on PHOENIX-4148: --------------------------------------- Use null as the tenantId. See example in GroupedAggregateRegionObserver of {{GlobalCache.getTenantCache(env, tenantId)}} and this javadoc: {code} /** * Get the tenant cache associated with the tenantId. If tenantId is not applicable, null may be * used in which case a global tenant cache is returned. * @param env the HBase configuration * @param tenantId the tenant ID or null if not applicable. * @return TenantCache */ public static TenantCache getTenantCache(RegionCoprocessorEnvironment env, ImmutableBytesPtr tenantId) { {code} > COUNT(DISTINCT(...)) should have a memory size limit > ---------------------------------------------------- > > Key: PHOENIX-4148 > URL: https://issues.apache.org/jira/browse/PHOENIX-4148 > Project: Phoenix > Issue Type: Bug > Reporter: Lars Hofhansl > > I just managed to kill (hang) a region server by issuing a > COUNT(DISTINCT(...)) query over a column with very high cardinality (20m in > this case). > This is perhaps not a useful thing to do, but Phoenix should nonetheless not > allow to have a server fail because of a query. > [~jamestaylor], I see there GlobalMemoryManager, but I do not quite see how > I'd get a reference to one, once needs a tenant id, etc. -- This message was sent by Atlassian JIRA (v6.4.14#64029)